5a^2b(x-y)-14ab^2(y-x)^25a^2b(x-y)-30ab^2(y-x)^2上面的错了 是这个！

a^2b(x-y)-ab(y-x) 因式分解a^2b(x-y)-ab(y-x)+b(x-y) 5a^2b(x-y)^2-30ab^2(y-x)^2 因式分解：5a^2b（x-y）^2-10ab^2（y-x）^3 5a^2 b(x-y)^3-30ab^2(y-x)^2 5a^2b(x-y)^3-30ab^2(y-x)^2 5a^2b(x-y)^3乘[-2ab(x-y)^2]^3= 计算：(2a-5b)(2a^2-3ab+b^2) （3x+2y)(2x+3y)-(x-3y)(3x+4y) 几道 数学题急啊 对了再加20分(x+y)^2-(x+y)^3(x-y)^2-(x-y)^3 (x-y)^2-(y-x)^32(x-y)-3(y-x)^24ab(a+b)^2-6a^2b(a+b)(x+y)(x-y)-(x+y)^28a(x-y)^2-4b(y-x)a=-5 a+b+c=-5.2求代数式a^2(-b-c)-3.2a(c+b)的值 多项式因式分解,(1)y(x-y)+x(x-y) (2)y(x-y)+x(y-x)(3)a(x-y)^2-b(y-x)^2 (4)a(x-y)^3-b(y-x)^3(5)a^2b(a-b)-ab^2(a-b) 5a^2b(x-y)-14ab^2(y-x)^25a^2b(x-y)-30ab^2(y-x)^2上面的错了 是这个！ 合并同类项:(1)x-y+5x-4y (2)2/3a-1/2ab+3/4a+ab-b (3合并同类项:(1)x-y+5x-4y(2)2/3a-1/2ab+3/4a+ab-b(3)4(x-y)+2(x-y)-7(x-y)-3(x-y) 1.9x^2-16(x+b)^22.(x+y)^3(x-y)-(x+y)(x-y)^33.25(x-2y)^3+4(2y-x)4.81a^5b^5-ab [(x+2y)^2-(-x-2y)(-x+2y)+2y(x-2y)]/2y计算-2a^2b-a^3-ab^2分解因式 因式分解(1)a^5b-16ab^5 (2)x²-y²+4y-4 ab^2(x-y)^m+a^2b(x-y)^m+1-ab(x-y)^m因式分解哈 初一因式分解练习题,谁好心帮我解下表示平方1.2X~-3XY-X2.(X+Y)~(X+Y)(X-Y)(X+Y)(Y+Z)3.3X(a+2b)~-6XY(a+2b)4.a(x-y)-b(X-Y)-C(Y-X)5.(b-a)~-2a+2b6.(x-y)~-m(y-x)+y-x7.x(x-y)(a-b)-y(y-x)(b-a)8.已知a+b=13,ab=40,求 b+ab~的值 证明：多项式ab^2(x--y）^5+a^2b(y--x)^5能被(a--b)整除