Question

Sendo A=(-2/3) elevado a 2 :(-2/3) elevado a 3 e B = (-1/4).8/3, calcule: A, B, AxB e A-B

Answer 1

(-2/3)^2= 4/9
(-2/3)^3= - 8/27
(4/9)/(-8/27)=3/2
A=3/2
(-1/4)vezes(8/3)=2/3
B=2/3
E então
a)3/2
b)-2/3
c)-1
d)13/6