x^2+xy-2y^2+2x+7x-3因式分解

1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y) 因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) (x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)答案应为-2x-x*x-3x， （x^2+xy/x-y)/（xy/x-y)计算 -xy^2(x+y)^3+x(x+y)^2因式分解 因式分解:8(x-2y)-x(7x+y)+xy. (x+3y)/(x^2+xy)-x+y计算题 6x^2-xy-2y^2-4x+5y-2因试分解 因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6 分解因试..X平方-2XY-8Y平方-X-14Y-6 x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2 分解因试（x-1)²-2(x-1)+1 x³y-2x²y²+xy³ -2x(3x-7y)+(x-y)(x^2+xy+y^2） 计算 求（3x^+y^-5xy）-【2x^-（-4xy-y^+7x^）】=? 求（3x^+y^-5xy）-【2x^-（-4xy-y^+7x^）】=? [x(x^2y^2-xy)-y(x^2-x^3y)]/(2x^2y) [x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y [x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y