Question

(-2√2)²
I want the answer because tomorrow is my exam

Answer 1

(-2√2)² = (-2 x √2)² = -2 x -2 x √2 x √2 = 4 x 2 = 8

Answer 2

the square both things in the parentheses and multiply then together
(2√2)^2
2^2 x (√2)^2
4 x 2
8