Verified answer

Resposta:

Explicação passo a passo:

a=2^-2= 1/2²=1/4

b=3^-3 =1/3³= 1/27.

A)

a+b= 1/4+1/27= 27+4/108= 31/108

B)

a-b= 1/4-1/27= (27-4)/108 = 23/108

C)

a*b= 1/4*1/27= 1/108

D)

a/b = 1/4 / 1/27 = 1/4*27/1= 27/4.