Rewrite as .

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

Multiply by .

Rewrite using the commutative property of multiplication.

Multiply by .

Rewrite using the commutative property of multiplication.

Multiply by .

Multiply by .

Multiply by .

Reorder and .

Add and .

Move .

Subtract from .

Move .

Subtract from .

Find the Perfect Square Trinomial (a+b-c)^2