通分① a/2b,b/3a²,c/4ab② 1/y-x,1/2x+2y③ 1/x²-2x+1,2/x
通分(1)6c/a²b与c/3ab² (2)x - y/2x+3y与xy/(x+y)²
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;
通分 1.c/ab a/bc b/ac 2.1/x²+x -1/x²+2x+1
一、约分(1)5x/25x² (2)9a²+6ab+b²/3a+b二、通分(1) x/3y
求分式通分:(1)x/3y与3x/2y² (2)6c/a²b与c/3ab² (3)x-y/
通分;2/3a与3/-4ab²;1/x-y与2/x²-y²;2/x²-9与x/6
通分1/2x,2/3y3/2bc,2/5c21/a(x-y),1/b(y-x)1/b-a,1/a2-b21/x2-2x+
分式的通分和约分,1、9a+6ab+b^2/3a+62、x^2-36/2x+12这2个是通分1、x-y/2x+2y与xy
①[(x+y)^2-(x+y)(x-y)]/2y②(-1/3a^3b^2)^2(-2ab^2)^3/(1/9a^4b^4
因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)(
通分:(1)y/x(x-y)的平方,x/(y-x)的三次方;(2)a/a的平方-4a+4,b/2a的平方-8a+8,c/
已知x=1/y,则(x-1/x)(y-1/y)等于 A、2x² B、2y² C、x²+y&