Question

$\frac{a+c}{ac} ×\frac{5ac^2}{c^2-a^2}$
$3xy:\frac{x^2}{3y^2}$
решите плииз

Answer 1

$\frac{a+c}{ac}*\frac{5ac^2}{(c-a)(c+a)}=\frac{5c}{c-a}$

$3xy*\frac{3y^2}{x^2}=\frac{9y^3}{x};$