通分:(1)x/a(x-y),y/b(y-x)(2)a/(y-x)^2,b/(x-y)(x-y)(3)3a/2a-2b,2a/b-a答题的时候先写出最简公分母哈~追加【30分】~

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/25 16:59:46
通分:(1)x/a(x-y),y/b(y-x)(2)a/(y-x)^2,b/(x-y)(x-y)(3)3a/2a-2b,2a/b-a答题的时候先写出最简公分母哈~追加【30分】~通分:(1)x/a(x

通分:(1)x/a(x-y),y/b(y-x)(2)a/(y-x)^2,b/(x-y)(x-y)(3)3a/2a-2b,2a/b-a答题的时候先写出最简公分母哈~追加【30分】~
通分:(1)x/a(x-y),y/b(y-x)
(2)a/(y-x)^2,b/(x-y)(x-y)
(3)3a/2a-2b,2a/b-a
答题的时候先写出最简公分母哈~追加【30分】~

通分:(1)x/a(x-y),y/b(y-x)(2)a/(y-x)^2,b/(x-y)(x-y)(3)3a/2a-2b,2a/b-a答题的时候先写出最简公分母哈~追加【30分】~
(1)它们的最简公分母是ab(x-y) x/a(x-y)=xb/ab(x-y) y/b(y-x)=-ab/ ab(x-y)
(2) 它们的最简公分母是(x-y)² a/(y-x)² =a/(x-y)² b/(x-y)(x-y) =b/(x-y)²
(3)它们的最简公分母是 2(a-b) 3a/2a-2b=3a/2(a-b) 2a/b-a =-4a/2(a-b)

题目简单,不过结果实在太难写了

(1)分母:-ab(x-y)分子:bx , -ay
(2)分母:(x-y)^2分子:a , b(此题分母本身就相同)
(3)分母:2a-2b分子:3a , -4a

(1)最简公分母为ab(x-y)
(2)............(x-Y)2
(3)............2(b-a)
然后你自己通吧,其中有的是要变号的.