Question

Решите уравнение $\frac{ y^{2} -25}{6y - 30} =0$

Answer 1

$\frac{y^2-25}{6y-30}=0$

$\frac{y+5}{6+6} =0$

$(y+5):(6+6)=0$
$y+5=0*12$
$y+5=0$
$y=-5$