Rewrite as .

Since both terms are perfect squares, factor using the difference of squares formula, where and .

Factor out of .

Factor out of .

Factor out of .

Factor out of .

Cancel the common factor of .

Factor out of .

Cancel the common factor.

Rewrite the expression.

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 .

Multiply by .

Add and .

Add and .

Multiply and .

Rewrite as .

Since both terms are perfect squares, factor using the difference of squares formula, where and .

Cancel the common factor of and .

Rewrite as .

Factor out of .

Factor out of .

Reorder terms.

Cancel the common factor.

Divide by .

Simplify by multiplying through.

Apply the distributive property.

Simplify the expression.

Multiply by .

Move to the left of .

Rewrite as .

Simplify by multiplying through.

Apply the distributive property.

Multiply.

Multiply by .

Multiply by .

Apply the distributive property.

Simplify (25-a^2)/(b+3)*(2b^2+6b)/(a-5)