数学题在线解答

问题:求x^2-y^2/x · -x^2/x^2+2xy+y^2
04-15 中学

结论/结果
-x(x-y)/(x+y)
解答

\begin{aligned}
& \frac{x^2-y^2}{x} \cdot \frac{-x^2}{x^2+2xy+y^2}\\
=& \frac{(x+y)(x-y)}{x} \cdot \frac{-x^2}{(x+y)^2}\\
=& \frac{-x(x-y)}{x+y}
\end{aligned}

提交讨论
提交新的题目