(1/2x-1/3y)(1/2x+1/3y)(1/4x^2+1/9y^2)因此分解

(1/2x-1/3y)(1/2x+1/3y)(1/4x^2+1/9y^2)因此分解 分解因式计算:x^2(x-y)+(y-x)=?x^3+x^2+1\4x=?(2x+y)^2-(x-2y)^2=? 多项式分解因式 1,x^2-y^2-3x+3y 2 ,(x-y)^2+4xy 3 ,x^2y+4y(x-3) 1、x(x-y)(x+y)-x(x+y)^2 （x+2)(x+3) (x-4)(x+1) (y+4)(y-2) (y-5)(y-3) {3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1 (1)(x^2/x)-y-x-y 因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)( 9y=3x-(x-1),4(x+y)-(2x+4)=8y 先化简再求值(x-y)(x+y)-(x-2y) 的完全平方+x(3x-5y)-(x-y)(x-2y),其中x=1/2 y x^3+x-30(分解因式);x^12-y^12;x^15+x^14+x^13.x^2+x+1 化简[(3x+4y)^2-(2x+y)(2x-y)+(-x+y)(5x-y)]除以-2y,其中x=-1,y=1