-y³+4y²-4y;2x²-4xy;
2x+y=0,求4x²+2xy(x+y)+y³
(-x-2y)(x²-2xy+4y²)
化简(x²y-4y²)/(x²+4xy+4y²)*[(4xy)/(x-2y)+x
已知x/y=2,求2x(x+y)-y(x+y)/4x²-4xy+y²
【分解因式】 x²-xy+4分之1y² x²y-2xy²+y³ a(x
数学题4xy²-4x²y-y³
因式分解,x²y²-4+xy²-2y.
3x²y+xy²-[2xy²-4x²y+(x²y-2xy²)
(2x²y-3xy²)-3(x²y-2xy²)+2(x²y-4xy
-2xy-4x²y+8三次方y
多项式因式分解 1,(x-y)³-(x-y)²(x+y) 2,x(x²-xy)-(4x
x^2y+4xy+4y