x²-12xy+36y²-6x+36y+8
已知x²+y²-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
36x²y-48xy² y(x-y)²-(y-x)³ 3ax²+6ax
x²/xy-x/y
计算:(xy-x²)×x-y/xy
[-xy/(x-y)²]²×(y²-xy/x)³
x/xy-y²与y/x²-xy 通分
因式分解①9(x+y)²-12(x+y-1/3) ②8-6x-6y+(x+y)²③xy³-
计算3x/8y×16y²/27x² (2xy-x²)÷x-2y/xy 2x-6/x
x²+xy-6y²因式分解
因式分解x²+xy-6y²
x²-xy-6y²-2x+11y-3; 2x²-xy-6y²+3x+8y-2;
x²-xy-6y²-2x+11y-3;2x²-xy-6y²+3x+8y-2; 3