(x-y)²-8(x-y-2)
求因式分解(x-y)²-2(x-y)³和(x+y)(x-y)-x(x-y)
(x-2y)²+(2x-4y)(x+y)+(x+y)²
(x-y)的四次方(x-y)-2(x-y)²(y-x)³等于?
1.((y+2x)(-2x+y)+4(x+2y)^2)/3y 2.(2(x-y)^3-8(x-y)^2(x+y)+6y(
2.(x+y)²(x-y)²-(x-y)(x+y)(x²+y²)
2(x-y)+3(x+y)2-5(x-y)-8(x+y)2-(x-y)
【(2x+y)²-y(y+4x)-8x】÷2x,其中x=100
已知:3x=8y.求(1)x+y/y (2)2x+3y/x-2y
若|x+2y-1|+y²+4y+4=0,求(2x-y)²-2(2x-y)(x+2y)+(x+2y)&
(x-y/x+2y)³
(3x-y)²-2x(4x-5y)-(x+2y)²
{(x-y)²+(x+y)(x-y)}÷2x