通分:(1)a-2/a-3 ,a+1/-(a-2)(3-a) (2)x/a(x-y),y/b(y-x)
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1/2x,2/3y3/2bc,2/5c21/a(x-y),1/b(y-x)1/b-a,1/a2-b21/x2-2x+
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)6c/a²b与c/3ab² (2)x - y/2x+3y与xy/(x+y)²
分解公因式的题 x(a-x)(a-y)-y(x-a)(y-a)-ab(a-b)^2+a(b-a)^2a^3b-ab2ab
已知集合A={(x,y)|(y-3)/(x-2)=a+1}B={(x,y)|(a^2-1)x+(a-1)y=15},当a
1.已知集合A={(x,y)|y=2x+1},B={(x,y)|y=x+3},a∈A,b∈B,求a
一、约分(1)5x/25x² (2)9a²+6ab+b²/3a+b二、通分(1) x/3y
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/
通分x/a(x-y),y/b(y-x) 通分 a/(y-x)的平方,b/(x-y)*(x+y)
(3x-y)(3x+y)+y(x+y);(a+1/2b)(a-1/2b)-(3a-2b)(3a+2b)快点,
1.计算(a^2+a+1)(a^2-a+1) 2.计算(x-y)(x+y)+(3x-2y)(2x+y)-x(6x-y)