Pls give me the answer to this i really need it!!

Question

Simplify the radical expression.

11) (3√(2 )- 2√5)(4√(2 )+ 2√5)

Answer 1

I will give you a hint on how to obtain the answer, but will not give you
the answer.

hint: multiply the expression by
(4√(2 ) - 2√5)/(4√(2 ) - 2√5) , which will rationalize the denominator.