Question

3) Qual o valor de x?

a) ⁵√x = 2

b) ³√x = 5​

Answer 1

Explicação passo-a-passo:

Descobrir valor de x:

a)

$\sf \sqrt[5]{x} = 2$

$\sf (\sqrt[5]{x})^5 = (2)^5$

$\sf (\sqrt[\diagup \!\!\! 5]{x})^\backslash \!\!\!^5 = (2)^5$

$\sf x = 2^5$

$\sf x = 32$

b)

$\sf \sqrt[3]{x} = 5$

$\sf (\sqrt[3]{x})^3 = (5)^3$

$\sf (\sqrt[\diagup \!\!\! 3]{x})^\backslash \!\!\!^3 = (5)^3$

$\sf x = 5^3$

$\sf x = 125$