分式的通分与约分①:x/a(x-y),y/b(y-x);②:1/x^2-1,2x/x^2-3x+2;

学习 时间:2026-08-24 13:28:25 阅读:3366
分式的通分与约分①:x/a(x-y),y/b(y-x);②:1/x^2-1,2x/x^2-3x+2;

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执着的草丛

犹豫的小馒头

2026-08-24 13:28:25

①:
x/a(x-y)=xb/ab(x-y),

y/b(y-x)=-y/b(-y)=-ay/ab(x-y);