Simplify 3ab(a^2-2ab+b^2)

$3 a b (a^{2} - 2 a b + b^{2})$

Apply the distributive property.

$3 a b a^{2} + 3 a b (- 2 a b) + 3 a b \cdot b^{2}$

Simplify.

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

Move $a^{2}$ .

$3 (a^{2} a) b + 3 a b (- 2 a b) + 3 a b \cdot b^{2}$

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

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

$3 (a^{2} a^{1}) b + 3 a b (- 2 a b) + 3 a b \cdot b^{2}$

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

$3 a^{2 + 1} b + 3 a b (- 2 a b) + 3 a b \cdot b^{2}$

Add $2$ and $1$ .

$3 a^{3} b + 3 a b (- 2 a b) + 3 a b \cdot b^{2}$

Multiply $a$ by $a$ by adding the exponents.

Move $a$ .

$3 a^{3} b + 3 (a \cdot a) b (- 2 b) + 3 a b \cdot b^{2}$

Multiply $a$ by $a$ .

$3 a^{3} b + 3 a^{2} b (- 2 b) + 3 a b \cdot b^{2}$

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

Move $b^{2}$ .

$3 a^{3} b + 3 a^{2} b (- 2 b) + 3 a (b^{2} b)$

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

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

$3 a^{3} b + 3 a^{2} b (- 2 b) + 3 a (b^{2} b^{1})$

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

$3 a^{3} b + 3 a^{2} b (- 2 b) + 3 a b^{2 + 1}$

Add $2$ and $1$ .

$3 a^{3} b + 3 a^{2} b (- 2 b) + 3 a b^{3}$

Simplify each term.

Multiply $b$ by $b$ by adding the exponents.

Move $b$ .

$3 a^{3} b + 3 a^{2} (b \cdot b) \cdot - 2 + 3 a b^{3}$

Multiply $b$ by $b$ .

$3 a^{3} b + 3 a^{2} b^{2} \cdot - 2 + 3 a b^{3}$

Multiply $- 2$ by $3$ .

$3 a^{3} b - 6 a^{2} b^{2} + 3 a b^{3}$