(x-2y)²+2x-4y+1 因式分解

计算x²-x/x²×x/1-x和x²-4y²/x²+2xy+y²÷x+2y/x²+xy 因式分解2x(x-y)^4 - x²(x-y)² + xy(y-x)²RT x²-4y² x+2y---------- ÷ --------分数线x²+2xy+y² x²+xyx²-4y² x+2y----------÷--------分数线x²+2xy+y² x²+xy(x+2y)(x-2y)x(x+y)=----------------(x+y)(x+y)(x+2y)(x-y)x=------(x+y)这样对了吗? 2x-y=2,求[(x²+y²)-(x-y)²+2y(x-y)]÷4y 在线求助完全平方公式因式分解(1)-a²-1+2a(2)2x²y-x²-xy²(3)4x²-20x+25(4)(x²+1)²-4x²(5)(2x-y)²-2(2x-y)+1(6)(x+y)²-2(x²-y²)+(x-y)² x²-4y²+x-2y因式分解 x²-4y²+x+2y因式分解 (x²-4y²)-(x+2y)怎样因式分解? 4x²-y²+2x-y 因式分解 x²-4y²-x-2y 分解因式 x²-x-4y²+2y x²-4y²/x²+2xy+y²÷x+2y/2x²+2xy (x-2y)²+2x-4y+1 因式分解 1、x²+4y²+_______=（x-2y）² x²-y²=1｛(x-y)²-2(x-y-2)=7 分解因式：2x²-8xy+5y²6x²-9x-4242x²-85xy+42y²3x²-5xy-y²(2x-y+3)(2x-y+1)-15(x+y)²+4(x+y)(3x-y)+4(3x-y)²完全按照原题打的 1、（4x²y-2x³）÷（-2x）²2、【（x-y）²+（x+y）（x-y）】÷2x (x²-y)²-(2y-2)²^4表示4次方9x^4-36y²(a²-2b)²-(1-2b)²