Question

решите уравнение y^2/y-5=25/y-5

Answer 1

$frac{y^{2} }{y-5}=frac{25}{y-5}\\frac{y^{2} }{y-5}-frac{25}{y-5}=0\\frac{y^{2}-25 }{y-5} =0\\frac{(y-5)(y+5)}{y-5}=0\\left { {{y+5=0} atop {y-5neq0 }} right.\\left { {{y=-5} atop {yneq 5}} right.$

Ответ : - 5