Why is the answer C here in both?

GRE Verbal Problem Solving
1

Geometry q
Geometry q545×578 27.2 KB

Can someone explain?

2

First solve LHS(Left Hand Side)
First solve the inner part (-1)* = 1 - (-1)=2 now, the questions become : (2)* , which is equal to RHS(Right hand Side)

Thus, C