4x²y(-xy²)³化简
[-xy/(x-y)²]²×(y²-xy/x)³
化简(x²y-4y²)/(x²+4xy+4y²)*[(4xy)/(x-2y)+x
化简4xy-3y²-3x²+xy-3xy-2x²+x²-2y²
1.化简:x²-4y²/x²+y²+2xy÷2y+x/x²+xy.
数学题4xy²-4x²y-y³
计算:(xy-x²)×x-y/xy
【分解因式】 x²-xy+4分之1y² x²y-2xy²+y³ a(x
因式分解:-x³-4xy²+4x²y
计算x²y³-2x(4xy³)
16x²y-16x³-4xy 因式分解
x²/xy-x/y
(5.2x²y-3.4xy+8x³)+2(2.2xy-4x³-2.3x²y)其中