Resposta:
Explicação passo-a-passo:
1- a) (-3)^4
(-3)*(-3)*(-3)*(-3)
+81
b) -(5)^4
-(5)*(5)*(5)*(5)
-(625)
-625
c) (2/3)^3
(2)*(2)*(2) / (3)*(3)*(3)
8/27
d)(- 4/5)^3
(-4)*(-4)*(-4) / (5)*(5)*(5)*
-64/125
2- a) 7^-1
1/7
b) (1/5)^-2
25/1
c) (7/11)^-1
11/7
d) 10-2
1/100
