Factor 125x^9+64y^3z^12

$125 x^{9} + 64 y^{3} z^{12}$

Step 1

Rewrite $125 x^{9}$ as ${(5 x^{3})}^{3}$ .

${(5 x^{3})}^{3} + 64 y^{3} z^{12}$

Step 2

Rewrite $64 y^{3} z^{12}$ as ${(4 y z^{4})}^{3}$ .

${(5 x^{3})}^{3} + {(4 y z^{4})}^{3}$

Step 3

Since both terms are perfect cubes, factor using the sum of cubes formula, $a^{3} + b^{3} = (a + b) (a^{2} - a b + b^{2})$ where $a = 5 x^{3}$ and $b = 4 y z^{4}$ .

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

Step 4

Simplify.

Apply the product rule to $5 x^{3}$ .

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

Raise $5$ to the power of $2$ .

$(5 x^{3} + 4 y z^{4}) (25 {(x^{3})}^{2} - (5 x^{3}) (4 y z^{4}) + {(4 y z^{4})}^{2})$

Multiply the exponents in ${(x^{3})}^{2}$ .

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$(5 x^{3} + 4 y z^{4}) (25 x^{3 \cdot 2} - (5 x^{3}) (4 y z^{4}) + {(4 y z^{4})}^{2})$

Multiply $3$ by $2$ .

$(5 x^{3} + 4 y z^{4}) (25 x^{6} - (5 x^{3}) (4 y z^{4}) + {(4 y z^{4})}^{2})$

Multiply $5$ by $- 1$ .

$(5 x^{3} + 4 y z^{4}) (25 x^{6} - 5 x^{3} (4 y z^{4}) + {(4 y z^{4})}^{2})$

Multiply $4$ by $- 5$ .

$(5 x^{3} + 4 y z^{4}) (25 x^{6} - 20 x^{3} (y z^{4}) + {(4 y z^{4})}^{2})$

Remove parentheses.

$(5 x^{3} + 4 y z^{4}) (25 x^{6} - 20 x^{3} y z^{4} + {(4 y z^{4})}^{2})$

Use the power rule ${(a b)}^{n} = a^{n} b^{n}$ to distribute the exponent.

Apply the product rule to $4 y z^{4}$ .

$(5 x^{3} + 4 y z^{4}) (25 x^{6} - 20 x^{3} y z^{4} + {(4 y)}^{2} {(z^{4})}^{2})$

Apply the product rule to $4 y$ .

$(5 x^{3} + 4 y z^{4}) (25 x^{6} - 20 x^{3} y z^{4} + 4^{2} y^{2} {(z^{4})}^{2})$

Raise $4$ to the power of $2$ .

$(5 x^{3} + 4 y z^{4}) (25 x^{6} - 20 x^{3} y z^{4} + 16 y^{2} {(z^{4})}^{2})$

Multiply the exponents in ${(z^{4})}^{2}$ .

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$(5 x^{3} + 4 y z^{4}) (25 x^{6} - 20 x^{3} y z^{4} + 16 y^{2} z^{4 \cdot 2})$

Multiply $4$ by $2$ .

$(5 x^{3} + 4 y z^{4}) (25 x^{6} - 20 x^{3} y z^{4} + 16 y^{2} z^{8})$

Factor 125x^9+64y^3z^12

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