Question

Simplify ( 2root 2+2 )(2 root 2-2)

Answer 1

Answer:

4

Step-by-step explanation:

we use identity (a+b)(a-b)=a^2- b^2 = (2root 2 +2 )(2root2-2) = (2root2)^2 - 2^2 =8-4=4 ans