Simplify (-2x^2yz^2+3x^2y)(-5y^2z^3-4z)(xy^2+z)

$(- 2 x^{2} y z^{2} + 3 x^{2} y) \cdot (- 5 y^{2} z^{3} - 4 z) \cdot (x y^{2} + z)$

Step 1

Expand $(- 2 x^{2} y z^{2} + 3 x^{2} y) (- 5 y^{2} z^{3} - 4 z)$ using the FOIL Method.

Apply the distributive property.

$(- 2 x^{2} y z^{2} (- 5 y^{2} z^{3} - 4 z) + 3 x^{2} y (- 5 y^{2} z^{3} - 4 z)) \cdot (x y^{2} + z)$

Apply the distributive property.

$(- 2 x^{2} y z^{2} (- 5 y^{2} z^{3}) - 2 x^{2} y z^{2} (- 4 z) + 3 x^{2} y (- 5 y^{2} z^{3} - 4 z)) \cdot (x y^{2} + z)$

Apply the distributive property.

$(- 2 x^{2} y z^{2} (- 5 y^{2} z^{3}) - 2 x^{2} y z^{2} (- 4 z) + 3 x^{2} y (- 5 y^{2} z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Step 2

Simplify each term.

Multiply $y$ by $y^{2}$ by adding the exponents.

Move $y^{2}$ .

$(- 2 x^{2} (y^{2} y) z^{2} (- 5 z^{3}) - 2 x^{2} y z^{2} (- 4 z) + 3 x^{2} y (- 5 y^{2} z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Multiply $y^{2}$ by $y$ .

Raise $y$ to the power of $1$ .

$(- 2 x^{2} (y^{2} y^{1}) z^{2} (- 5 z^{3}) - 2 x^{2} y z^{2} (- 4 z) + 3 x^{2} y (- 5 y^{2} z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$(- 2 x^{2} y^{2 + 1} z^{2} (- 5 z^{3}) - 2 x^{2} y z^{2} (- 4 z) + 3 x^{2} y (- 5 y^{2} z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Add $2$ and $1$ .

$(- 2 x^{2} y^{3} z^{2} (- 5 z^{3}) - 2 x^{2} y z^{2} (- 4 z) + 3 x^{2} y (- 5 y^{2} z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Multiply $z^{2}$ by $z^{3}$ by adding the exponents.

Move $z^{3}$ .

$(- 2 x^{2} y^{3} (z^{3} z^{2}) \cdot - 5 - 2 x^{2} y z^{2} (- 4 z) + 3 x^{2} y (- 5 y^{2} z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$(- 2 x^{2} y^{3} z^{3 + 2} \cdot - 5 - 2 x^{2} y z^{2} (- 4 z) + 3 x^{2} y (- 5 y^{2} z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Add $3$ and $2$ .

$(- 2 x^{2} y^{3} z^{5} \cdot - 5 - 2 x^{2} y z^{2} (- 4 z) + 3 x^{2} y (- 5 y^{2} z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Multiply $- 5$ by $- 2$ .

$(10 x^{2} y^{3} z^{5} - 2 x^{2} y z^{2} (- 4 z) + 3 x^{2} y (- 5 y^{2} z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Multiply $z^{2}$ by $z$ by adding the exponents.

Move $z$ .

$(10 x^{2} y^{3} z^{5} - 2 x^{2} y (z \cdot z^{2}) \cdot - 4 + 3 x^{2} y (- 5 y^{2} z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Multiply $z$ by $z^{2}$ .

Raise $z$ to the power of $1$ .

$(10 x^{2} y^{3} z^{5} - 2 x^{2} y (z^{1} z^{2}) \cdot - 4 + 3 x^{2} y (- 5 y^{2} z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$(10 x^{2} y^{3} z^{5} - 2 x^{2} y z^{1 + 2} \cdot - 4 + 3 x^{2} y (- 5 y^{2} z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Add $1$ and $2$ .

$(10 x^{2} y^{3} z^{5} - 2 x^{2} y z^{3} \cdot - 4 + 3 x^{2} y (- 5 y^{2} z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Multiply $- 4$ by $- 2$ .

$(10 x^{2} y^{3} z^{5} + 8 x^{2} y z^{3} + 3 x^{2} y (- 5 y^{2} z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Multiply $y$ by $y^{2}$ by adding the exponents.

Move $y^{2}$ .

$(10 x^{2} y^{3} z^{5} + 8 x^{2} y z^{3} + 3 x^{2} (y^{2} y) (- 5 z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Multiply $y^{2}$ by $y$ .

Raise $y$ to the power of $1$ .

$(10 x^{2} y^{3} z^{5} + 8 x^{2} y z^{3} + 3 x^{2} (y^{2} y^{1}) (- 5 z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$(10 x^{2} y^{3} z^{5} + 8 x^{2} y z^{3} + 3 x^{2} y^{2 + 1} (- 5 z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Add $2$ and $1$ .

$(10 x^{2} y^{3} z^{5} + 8 x^{2} y z^{3} + 3 x^{2} y^{3} (- 5 z^{3}) + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Multiply $- 5$ by $3$ .

$(10 x^{2} y^{3} z^{5} + 8 x^{2} y z^{3} - 15 x^{2} y^{3} z^{3} + 3 x^{2} y (- 4 z)) \cdot (x y^{2} + z)$

Multiply $- 4$ by $3$ .

$(10 x^{2} y^{3} z^{5} + 8 x^{2} y z^{3} - 15 x^{2} y^{3} z^{3} - 12 x^{2} y z) \cdot (x y^{2} + z)$

Step 3

Expand $(10 x^{2} y^{3} z^{5} + 8 x^{2} y z^{3} - 15 x^{2} y^{3} z^{3} - 12 x^{2} y z) (x y^{2} + z)$ by multiplying each term in the first expression by each term in the second expression.

$10 x^{2} y^{3} z^{5} (x y^{2}) + 10 x^{2} y^{3} z^{5} z + 8 x^{2} y z^{3} (x y^{2}) + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Step 4

Simplify each term.

Multiply $x^{2}$ by $x$ by adding the exponents.

Move $x$ .

$10 (x \cdot x^{2}) y^{3} z^{5} y^{2} + 10 x^{2} y^{3} z^{5} z + 8 x^{2} y z^{3} (x y^{2}) + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Multiply $x$ by $x^{2}$ .

Raise $x$ to the power of $1$ .

$10 (x^{1} x^{2}) y^{3} z^{5} y^{2} + 10 x^{2} y^{3} z^{5} z + 8 x^{2} y z^{3} (x y^{2}) + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$10 x^{1 + 2} y^{3} z^{5} y^{2} + 10 x^{2} y^{3} z^{5} z + 8 x^{2} y z^{3} (x y^{2}) + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Add $1$ and $2$ .

$10 x^{3} y^{3} z^{5} y^{2} + 10 x^{2} y^{3} z^{5} z + 8 x^{2} y z^{3} (x y^{2}) + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Multiply $y^{3}$ by $y^{2}$ by adding the exponents.

Move $y^{2}$ .

$10 x^{3} (y^{2} y^{3}) z^{5} + 10 x^{2} y^{3} z^{5} z + 8 x^{2} y z^{3} (x y^{2}) + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$10 x^{3} y^{2 + 3} z^{5} + 10 x^{2} y^{3} z^{5} z + 8 x^{2} y z^{3} (x y^{2}) + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Add $2$ and $3$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{5} z + 8 x^{2} y z^{3} (x y^{2}) + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Multiply $z^{5}$ by $z$ by adding the exponents.

Move $z$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} (z \cdot z^{5}) + 8 x^{2} y z^{3} (x y^{2}) + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Multiply $z$ by $z^{5}$ .

Raise $z$ to the power of $1$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} (z^{1} z^{5}) + 8 x^{2} y z^{3} (x y^{2}) + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{1 + 5} + 8 x^{2} y z^{3} (x y^{2}) + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Add $1$ and $5$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{2} y z^{3} (x y^{2}) + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Multiply $x^{2}$ by $x$ by adding the exponents.

Move $x$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 (x \cdot x^{2}) y z^{3} y^{2} + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Multiply $x$ by $x^{2}$ .

Raise $x$ to the power of $1$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 (x^{1} x^{2}) y z^{3} y^{2} + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{1 + 2} y z^{3} y^{2} + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Add $1$ and $2$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y z^{3} y^{2} + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Multiply $y$ by $y^{2}$ by adding the exponents.

Move $y^{2}$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} (y^{2} y) z^{3} + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Multiply $y^{2}$ by $y$ .

Raise $y$ to the power of $1$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} (y^{2} y^{1}) z^{3} + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{2 + 1} z^{3} + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Add $2$ and $1$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{3} z - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Multiply $z^{3}$ by $z$ by adding the exponents.

Move $z$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y (z \cdot z^{3}) - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Multiply $z$ by $z^{3}$ .

Raise $z$ to the power of $1$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y (z^{1} z^{3}) - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{1 + 3} - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Add $1$ and $3$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{2} y^{3} z^{3} (x y^{2}) - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Multiply $x^{2}$ by $x$ by adding the exponents.

Move $x$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 (x \cdot x^{2}) y^{3} z^{3} y^{2} - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Multiply $x$ by $x^{2}$ .

Raise $x$ to the power of $1$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 (x^{1} x^{2}) y^{3} z^{3} y^{2} - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{1 + 2} y^{3} z^{3} y^{2} - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Add $1$ and $2$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{3} z^{3} y^{2} - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Multiply $y^{3}$ by $y^{2}$ by adding the exponents.

Move $y^{2}$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} (y^{2} y^{3}) z^{3} - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{2 + 3} z^{3} - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Add $2$ and $3$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{5} z^{3} - 15 x^{2} y^{3} z^{3} z - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Multiply $z^{3}$ by $z$ by adding the exponents.

Move $z$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{5} z^{3} - 15 x^{2} y^{3} (z \cdot z^{3}) - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Multiply $z$ by $z^{3}$ .

Raise $z$ to the power of $1$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{5} z^{3} - 15 x^{2} y^{3} (z^{1} z^{3}) - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{5} z^{3} - 15 x^{2} y^{3} z^{1 + 3} - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Add $1$ and $3$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{5} z^{3} - 15 x^{2} y^{3} z^{4} - 12 x^{2} y z (x y^{2}) - 12 x^{2} y z \cdot z$

Multiply $x^{2}$ by $x$ by adding the exponents.

Move $x$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{5} z^{3} - 15 x^{2} y^{3} z^{4} - 12 (x \cdot x^{2}) y z y^{2} - 12 x^{2} y z \cdot z$

Multiply $x$ by $x^{2}$ .

Raise $x$ to the power of $1$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{5} z^{3} - 15 x^{2} y^{3} z^{4} - 12 (x^{1} x^{2}) y z y^{2} - 12 x^{2} y z \cdot z$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{5} z^{3} - 15 x^{2} y^{3} z^{4} - 12 x^{1 + 2} y z y^{2} - 12 x^{2} y z \cdot z$

Add $1$ and $2$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{5} z^{3} - 15 x^{2} y^{3} z^{4} - 12 x^{3} y z y^{2} - 12 x^{2} y z \cdot z$

Multiply $y$ by $y^{2}$ by adding the exponents.

Move $y^{2}$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{5} z^{3} - 15 x^{2} y^{3} z^{4} - 12 x^{3} (y^{2} y) z - 12 x^{2} y z \cdot z$

Multiply $y^{2}$ by $y$ .

Raise $y$ to the power of $1$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{5} z^{3} - 15 x^{2} y^{3} z^{4} - 12 x^{3} (y^{2} y^{1}) z - 12 x^{2} y z \cdot z$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{5} z^{3} - 15 x^{2} y^{3} z^{4} - 12 x^{3} y^{2 + 1} z - 12 x^{2} y z \cdot z$

Add $2$ and $1$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{5} z^{3} - 15 x^{2} y^{3} z^{4} - 12 x^{3} y^{3} z - 12 x^{2} y z \cdot z$

Multiply $z$ by $z$ by adding the exponents.

Move $z$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{5} z^{3} - 15 x^{2} y^{3} z^{4} - 12 x^{3} y^{3} z - 12 x^{2} y (z \cdot z)$

Multiply $z$ by $z$ .

$10 x^{3} y^{5} z^{5} + 10 x^{2} y^{3} z^{6} + 8 x^{3} y^{3} z^{3} + 8 x^{2} y z^{4} - 15 x^{3} y^{5} z^{3} - 15 x^{2} y^{3} z^{4} - 12 x^{3} y^{3} z - 12 x^{2} y z^{2}$

Simplify (-2x^2yz^2+3x^2y)*(-5y^2z^3-4z)*(xy^2+z)

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Simplify (-2x^2yz^2+3x^2y)(-5y^2z^3-4z)(xy^2+z)