化简?(x+y)(a+b)-(x-y)(2a+b) 不全部拆开如何化简?

化简(x-y)(a+b)-(x-y)(a-b) (x+y)-(a-b)(x+y)因式分解 因式分解 a(y-x)-b(x-y) 化简x²/(y-x)-y²/(y-x)的结果是要求写具体过程、A -x-y B y-x C x-y D 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) 通分 a/(y-x)^2,b/(x-y)(x+y) 因式分解a(x-y)+b(y-x)+(2x-y) 化简(y-1/x)-(x-1/y)的结果是A.-y/x B.-x/y C.x/y D.y/x a(x-y)(x+y)-b(y-x)(x+y)-c(x-y)^2(y+x)提取公因式 (a-b)(x-y)-(b-a)(x+y)怎么算 (a+b)(x+y)-(a+b)(x-y)分解因式 (a-b)(x-y)-(b-a)(x+y)因式分解 (a+b)(x+y)-(b+a)(y-x)因式分解快 [a-b][x-y]-[b-a][x+y]的解法 (a-b)(x-y)+(b-a)(y-x) 分解因式：(a-b)(x-y)-(b-a)(x+y)