Resposta :
Resposta:
Explicação passo a passo:
A=
(2/3)^-2-(1/2)^1+(-1/4)^-2=
(3/2)^2-(2)+(-4)^2=
9/4-2+16=
9/4-8/4+64/4=
1/4+64/4=
65/4
Resposta:
Explicação passo a passo:
A=
(2/3)^-2-(1/2)^1+(-1/4)^-2=
(3/2)^2-(2)+(-4)^2=
9/4-2+16=
9/4-8/4+64/4=
1/4+64/4=
65/4