Rewrite as .

Factor out of .

Rewrite as .

Rewrite as .

Add parentheses.

Pull terms out from under the radical.

Raise to the power of .

Multiply by .

Rewrite as .

Factor out of .

Rewrite as .

Add parentheses.

Pull terms out from under the radical.

Multiply by .

Add and .

Simplify -9 square root of 48m+8 square root of 75m