Question

de o valor de cada potencia expresso na forma decimal: 0,5 a) (10)^-3 b)(2^3)^-2

Answer 1

Explicação passo-a-passo:

a)

$\sf 10^{-3}=\dfrac{1}{10^3}$

$\sf 10^{-3}=\dfrac{1}{1000}$

$\sf 10^{-3}=\red{0,001}$

b)

$\sf (2^3)^{-2}=2^{3\cdot(-2)}$

$\sf (2^3)^{-2}=2^{-6}$

$\sf (2^3)^{-2}=\dfrac{1}{2^6}$

$\sf (2^3)^{-2}=\dfrac{1}{64}$

$\sf (2^3)^{-2}=\red{0,015625}$