(2x-y)-2x＋4y (-12a^3b＋6a^2b^3-2ab^2)÷(-2a

几道因式分解..4ab(a+b)^2-6a^2b(a+b)(x+y)^2(x-y)+(x+y)(x-y)^22a(a-3 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 A.A+(4X+3Y)B.A+(4X+6Y) C.A+2( x²（x+y)(y-x)-xy(x+y)(x-y) 已知a+b=4,ab=-2,求多项式3a²b+3 因式分解-6a^3+4ab^3-2a^2b,3a^2(x-y)+27(y-x) 计算：(2a-5b)(2a^2-3ab+b^2) （3x+2y)(2x+3y)-(x-3y)(3x+4y) 3a-3b/10ab*25a^b3/a^-b^= x^-4y^/x^+2xy+y^/x+2y/2x^+2xy (3a+b)(3a-b) (-1/2a-b) (3y+2x)^2 (3ab+2b)^2 -8a^4b^/6ab^2 (3 (2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y) 因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)( 计算 1.[(a+b)^2-(a+b)(a-b)]÷(-b) 2.[(x+y)(2x+y)+(x+y)(x-y)]÷3x 因式分解 x^2-5x-6 y^2-x-12 (a+b)^3-(a+b) 6a^2b^2-18ab^2c+12ab^2c