Question

Resolva:

a) 15\∛625
b) 45∛81
c)

Answer 1

$a) \frac{15 \ }{ \sqrt[3]{625} } = \frac{15}{ \sqrt[3]{5^3.5} } = \frac{15}{5 \sqrt[3]{5} }= \frac{3}{ \sqrt[3]{5} } * \frac{ \sqrt[3]{5^2} }{ \sqrt[3]{5^2} } = \frac{3 \sqrt[3]{5^2} }{5}$

$b) 45 \sqrt[3]{81} =45 \sqrt[3]{3^3} = 45 . 3 = 135$