Respostas

2014-04-02T19:14:42-03:00
A) 1/3 elevado a dois = 1/9
b) 2/5 elevado a 3 = 8/ 125
c) -4 elevado a dois = + 16
2014-04-02T23:09:41-03:00

a) (1/3)²=(1x1)/(3x3)=1/9
b)(2/5)³=(2x2x2)/(5x5x5)=8/125
c)(-4)³=(-4)x(-4)x(-4)=-64