Question

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8 - Calcule as potencias de expoente negativo:
a) (-5)-3 =
c) (1 3-1
b) (7) -3=
d) (2V2)-1 =

ajuda ai​

Answer 1

Resposta:

a) (-5)^-3= -(1/5^3)= -1/125

b) (13)^-1= 1/13

c) (7)^-3= 1/7^3= 1/343

d) (2✓2)^-1= 1/2✓2----> 1/2✓2*✓2/✓2= ✓2/4