5a^2b(x-y)^3-30ab^2(y-x)^2

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)^2-30ab^2(y-x)^2 5a^2b(x-y)^3乘[-2ab(x-y)^2]^3= 因式分解：5a^2b（x-y）^2-10ab^2（y-x）^3 计算：(2a-5b)(2a^2-3ab+b^2) （3x+2y)(2x+3y)-(x-3y)(3x+4y) a^2b(x-y)-ab(y-x) 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 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) 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) （2a+b)（2a-3b）+3a（2a+b)和x（x+y)(x-y)-x(x+y)²4a（x+y)-6x-6y和啊a（a-b）-ab+b² 2*x*x-ax-y+b-2bx*x-3x-5y+1 的值于字母x的值无关,求 3a*a-3ab-3b*b-4a*a-ab-b*b 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 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 X+3=7—y a,b互为倒数,则1/2x(X+y)+5ab等于多少? 计算题,1.5a^2b/（-1/3ab）*2ab^22.[(x+2y)^2-(x+y)(x-y)-5y^2]/2x3.(2a-b+3)(2a-3+b) 12ab^2(y-x)+9b^3(x-y)+4a^2b(x-y)因式分解 选择适当公式计算,（2x-1)(-1+2x) (-2x-y)(2x-y) (-a+5)(-a-5) (ab-1)(-ab+1) (2x+1)^2-(2x)^2(2a-3b)^2-2a(a-b)