Apply the distributive property.

Apply the distributive property.

Apply the distributive property.

Simplify each term.

Combine using the product rule for radicals.

Multiply by .

Rewrite as .

Pull terms out from under the radical, assuming positive real numbers.

Move to the left of .

Multiply by .

Subtract from .

Add and .

Add and .

Multiply ( square root of 6+7)( square root of 6-7)