Question

Calculati :
$\sqrt[3]{185^{2}-158^2 }$

Answer 1

$\sqrt[3]{ 185^{2} - 158^{2} } = \sqrt[3]{ (185+158)(185-158)} \\ = \sqrt[3]{343*27 } = \sqrt[3]{343} * \sqrt[3]{ 27} }= 7*3 = 21$