xy=2 then what is (2^(x+y)^2) / (2^(x-y)^2)
Choose the correct answer.
A) 2 B) 4 C) 8 D) 16 E) 256

Rationale: ( x + y ) ^ 2 - ( x - y ) ^ 2 ( x + y + x - y ) ( x + y - x + y ) ( 2 x ) ( 2 y ) 4 xy 8 2 ^ 8 = 256 answer e
Answer: E