4x^2-12xy+9y^2-8x+12y-12

因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) 因式分解30题(要过程)am+an+bm+bn x^2+5y-xy-5x x2+xy+2xz+x (a+b)x-(b+a)y -12x(x-y)-(y-x)x^2 2x^2+4x+2 x(x+z)-y(y+z) 2(x^2-3ab)+x(4a-3b) 4x^2+12xy+9y^2-25 x^4-16 16x^4-1 x^2+9x+8 x^2-10xy+24y^2 2x^2+15xy-8y^2 3x^2-6xy+3y^2 24x^2+22x-21 -x^2+4xy- （12x^2y-8xy^2+16xy）/-3x+2y-4=? (12x^2y-8xy^2+16xy）/-3x+2y-4=? 已知X+Y=3,XY=-1,求2(X-Y)^4-9(X-Y)^2+12XY 化简:-x(2)-(2xy) *9x(2)-9xy(3)+12x(4)y(2)/(3xy)谢谢! 4x^2y+12xy+9y分解因式 4x^2-12xy+9y^2-8x+12y-12 xy-2x+6y-12 xy+8 2 3 2 3 2 3 2x y+(-4x y)-(-3x y) 2 2 (3x+x-5)-(4-x+7x) 2 2 (8xy-3y)-5xy-2(3xy-2x)12 2 2 2 __ 5(3x y-xy)-(xy-3x y)其中x=2 y=-1算出来 化简：3x^2-[5xy-(x^y-3xy)+4x^2y-8xy] 因式分解2x^2y-x^3-xy^2 4-12(x-y）+9（x-y）^22x^2y-x^3-xy^24-12(x-y）+9（x-y）^2 因式分解1、2x^2(y+2)-3y^3(x-3)-12xy 2、x^3-4xy+4y^2-6x+12y+8 1 x²y-3xy²2 2x(2x-y)+y(y-2x)3 -6x(m-2n)+12(2n-m)4 3(y-x)²-(x-y)³5 4a²-366 (x-2y)²-x²7 4x³y+4x²y²+xy³8 (x+y)²-2m(x+y)+m²9 x²-9x+1810 -8x²-10x-3 X×X-2XY-Y×Y+2X-2Y+2=02X×2X-4XY-2Y×2Y+3X-3Y+4=0X×X+2XY+Y×Y+X+Y-56=0X×X-2XY+Y×Y-X+Y-12=0X×X-3XY+Y×Y=-13X×3X-XY+3Y×3Y=13 两个在一起的方程之间有所联系（要求一步一步写出来） 计算:12xy^2/(x+y) * (x^2 - y^2)/4xy 12xy^2/x+y除以4xy/x^2-y^2 因式分解x^3+9xy^2-12x^2y