1.x(x-y)^2(a-b)-(y-x)^3(b-a) 2.(-2）^2001+2^2002

通分 a/(y-x)^2,b/(x-y)(x+y) 因式分解a(x-y)+b(y-x)+(2x-y) 因式分解：a(x-y)^2+b(y-x)^3 4(x-y)^2+8(y-x)(x+y)1.a(x-y)^2+b(y-x)^3 2.4(x-y)^2+8(y-x)(x+y) a(x-y)(x+y)-b(y-x)(x+y)-c(x-y)^2(y+x)提取公因式 (2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y) (x+y)(a-2b) 计算 1.[(a+b)^2-(a+b)(a-b)]÷(-b) 2.[(x+y)(2x+y)+(x+y)(x-y)]÷3x 1.-2(b-2a)^2+(b-2a)2.-3(x-y)^2-(y-x)^33.3(x+y)(y-x)-(x-y)^3 1.x（x-y）+y（y-x）2.9（a-b）^2-16(a+b)^2 3.25(x-y)^2+10(y-x)+1 (x+y)-(a-b)(x+y)因式分解 因式分解 a(y-x)-b(x-y) (5)a(x+y)-b(x+y)-x-y因式分解 通分:-x/a(x-y) ,y/b(y-x) 通分x/a(x-y),y/b(y-x) 若集合A={(x,y)|y>=|x-2|} ,B={(x,y)|y A={（x,y)|y>=0.5|x-2|},B={(x,y)|y (x/2y)^2*y/2x-x/y^2/2y^2/x(x/x+y+2y/x+y)*xy/x+2y/(1/x+1/y)(1/a+1/b)^2/(1/a^2-1/b^2) 因式分解 a^2(x-y)+b^2(y-x)