Question

(-2)elevado a 2 + (-2) elevado a 3

Answer 1

(-2)²= 2.2= 4  
(-2)³= 2.2.2= 8     
 8+4= 12

Answer 2

(-2)^2= -2 x -2 = 4
(-2)^3 = -2 x -2 x-2 = -8

4+(-8) = 4-8 = -4