Factor out of .

Factor out of .

Factor out of .

Factor out of .

Factor out of .

Rewrite as .

Rewrite as .

Check the middle term by multiplying and compare this result with the middle term in the original expression.

Simplify.

Factor using the perfect square trinomial rule , where and .

Move .

Reorder and .

Add parentheses.

Pull terms out from under the radical.

Simplify square root of 8x^3+24x^2+18x