Question

calcule as potências:​

Answer 1

Resposta:

Olá!

Explicação passo a passo:

a) $-7^2=-7.7=-49$

b) $(-5)^2=(-5).(-5)=25$

c) $2^5=2.2.2.2.2=32$

d) $(-2)^5=(-2).(-2).(-2).(-2).(-2)=-32$

e) $-(-3)^4=-(-3).(-3).(-3).(-3)=-81$

f) $-2^{-1}=-(\frac{1}{2} )^1=-\frac{1}{2}$

g) $(-\frac{2}{5})^3= =(-\frac{2}{5}).(-\frac{2}{5}).(-\frac{2}{5})=-\frac{8}{125}$

h) $(-\frac{3}{2})^{-4}=(-\frac{2}{3})^4=(-\frac{2}{3}).(-\frac{2}{3}).(-\frac{2}{3}).(-\frac{2}{3})=\frac{16}{81}$

i) $(-\frac{1}{2})^6=(-\frac{1}{2}).(-\frac{1}{2}).(-\frac{1}{2}).(-\frac{1}{2}).(-\frac{1}{2}).(-\frac{1}{2})=\frac{1}{64}$

j) $6^{-2}=(\frac{1}{6} )^2=\frac{1}{36}$

Bons Estudos!