> 数学 >
x^2+2xy+y^2/x^2-y^2约分
人气:135 ℃ 时间:2020-05-07 17:03:32
解答
(x^2+2xy+y^2)/(x^2-y^2)
=(x+y)^2/[(x-y)(x+y)]
=(x+y)/(x-y)
推荐
猜你喜欢
© 2025 79432.Com All Rights Reserved.
电脑版|手机版