(6x+2y)-1/2(-2x-4y)
1.((y+2x)(-2x+y)+4(x+2y)^2)/3y 2.(2(x-y)^3-8(x-y)^2(x+y)+6y(
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
1、x(x-y)(x+y)-x(x+y)^2
因式分解 (1).(x+y)(x+y-6)+9 (2).x²-16y²-x-4y
若|x+2y-1|+y²+4y+4=0,求(2x-y)²-2(2x-y)(x+2y)+(x+2y)&
1) (2x+5y)(2x-5y)(-4x^2-25y^2) 2) [(x+y)(x-y)-(x-y)^2+2y(x-y
因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)(
(1)(x^2/x)-y-x-y
计算:(3x-4y)-[-(2y+x)+(x-3y)]-6x
(2X-Y)²-4(X-Y)*(X+Y)-(X-Y)*(X-1)
[(-x-y)(-x+y)-(x+y)^2-x(y-y^2)}÷1/2y
(x+2)(x+3) (x-4)(x+1) (y+4)(y-2) (y-5)(y-3)