Apply the distributive property.

Apply the distributive property.

Apply the distributive property.

Simplify each term.

Multiply by .

Multiply by .

Move to the left of .

Rewrite using the commutative property of multiplication.

Multiply by by adding the exponents.

Move .

Use the power rule to combine exponents.

Add and .

Add and .

Add and .

Expand (3+b^2)(3-b^2)