> 其他 >
x/x^2-25-5/x^2+10x+25
人气:298 ℃ 时间:2020-09-04 01:27:59
解答
原式=x/(x+5)(x-5)-5/(x+5)²
=[x(x+5)-5(x-5)]/(x+5)²(x-5)
=(x²+25)/[(x+5)²(x-5)]
推荐
猜你喜欢
© 2026 79432.Com All Rights Reserved.
电脑版|手机版