Rewrite as .

Apply the distributive property.

Apply the distributive property.

Apply the distributive property.

Simplify each term.

Multiply by .

Move to the left of .

Multiply by .

Add and .

Expand by multiplying each term in the first expression by each term in the second expression.

Simplify each term.

Multiply by by adding the exponents.

Multiply by .

Raise to the power of .

Use the power rule to combine exponents.

Add and .

Move to the left of .

Multiply by by adding the exponents.

Move .

Multiply by .

Multiply by .

Multiply by .

Simplify by adding terms.

Add and .

Add and .

Simplify (b+40)^2(b-28)