Question

log x = 2 e log y = 3 calcule log(x.y)3

Answer 1

$\large\boxed{\begin{array}{l}\rm \ell og(x\cdot y)^3=3\ell og(xy)\\\rm 3\cdot[\ell og (x)+\ell og(y)]\\\rm 3\cdot[2+3]=3\cdot5=15\end{array}}$