7) $\frac{x^2+2}{y-5}+\frac{2}{5-y}=$

Question

Вопрос: $Фото задания: 7) $\frac{x^2+2}{y-5}+\frac{2}{5-y}=$$ Фото задания

Accepted Answer

Так как $5-y=-(y-5)$, то $\frac{2}{5-y}=-\frac{2}{y-5}$.

\[\frac{x^2+2}{y-5}+\frac{2}{5-y}=\frac{x^2+2}{y-5}-\frac{2}{y-5}=\frac{x^2}{y-5}\]

ОДЗ: $y\ne5$.

Ответ: $\frac{x^2}{y-5}$, $y\ne5$.

7) \(\frac{x^2+2}{y-5}+\frac{2}{5-y}=\)