Question

calcule as potências. a)5-³= b)(-2)⁷ c)3-³= d)(2³)⁷= e)10³= f)18¹= g)-3² h)(7/2)-⁴. ME AJUDEM POR FAVOR!!!!!!!!!

​

Answer 1

a) $5^{-3}$ =  $\frac{1}{5}^{3}$ = $\frac{1}{125}$

b) $(-2)^{7}$ = -128

c) $3^{-3}$ = $\frac{1}{3}^{3}$ = $\frac{1}{27}$

d)  $(2^{3})^{7}$ = $2^{21}$ = 2.097.152

e) $10^{3}$ = 1000

f) $18^{1}$ = 18

g) $-3^{2}$ = -9

h) $(\frac{7}{2}) ^{-4}$ = $\frac{2}{7}^{4}$ = $\frac{16}{2401}$

Espero ter ajudado :D