Question

2 Vamos calcular:
${2}^{ - 1}$
${2}^{ - 5}$
${( - 2)}^{ - 2}$
${ - 2}^{ - 4}$
$- {( - 4)}^{ - 3}$
$- {( - 10)}^{ - 1}$
${10}^{ - 3}$
$- { ( - 7)}^{ - 2}$

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Answer 1

2^-1 = 1/2

2^-5 = 1/2^5 = 1/25

(-2)^-2 = 1/(-2)^2 = 1/2^2 = 1/4

- 2^-4 = - 1/2^4 = - 1/16

-(-4)^-3 = - 1/(-4)^3 = - 1/-4^3 = 1/64

-(- 10)^-1 = - 1/-10 = 1/10

10^-3 = 1/10^3 = 1/1000

-(-7)^-2 = - 1/(-7)^2 = - 1/-7^2 = 1/49