初中数学求解4x²y-8xy²+7-4x²y+10xy²-4 -4x²
初中数学求解4x²y-8xy²+7-4x²y+10xy²-4 -4x²
已知x²+y²-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
3x²y+xy²-[2xy²-4x²y+(x²y-2xy²)
(2x²y-3xy²)-3(x²y-2xy²)+2(x²y-4xy
因式分解:4x²y+4xy²+xy²
(-x-2y)(x²-2xy+4y²)
-4x²y-8xy²+2x²y-3xy²
因式分解:x²-y²+4xy
4x²+8xy=y²+xy,求x:y=?
化简(x²y-4y²)/(x²+4xy+4y²)*[(4xy)/(x-2y)+x
[(X²-7XY+10Y²)/(X²+4XY-12Y²)]×[(X²+
-3(xy-2x²)-[y²-(5xy-4x²)+2xy]