Question

-2 elevado a -2 + (-2) elevado a -1 + ( - 2) elevado a 1 + (- 2) elevado a 2

Answer 1

-2 elevado a -2 = 1/4 
-2 elevado a -1 = 1/2
-2 elevado a 1 = -2
-2 elevado a 2 = -4

1/4 + 1/2 + (-2) + 4
1/4 + 1/2 + 2
(1/4 + *1/2) + 2
*[1/2 = 2/4]
(1/4 + 2/4) + 2
3/4 + *2
*[2 = 4/4]
3/4 + 4/4 = 11/4