可以的话,6y²-11xy-10x²6x²+5x-6
可以的话,6y²-11xy-10x²6x²+5x-6
化简 (x+y)(x²-xy+y²) ; 3(2x-1)(x+6)-5(x-3)(x+6)
先化简再求值:x的平方y-3x²-6xy+5xy+2x²y 其中x=11 y=-6
已知x²+y²-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
x²+xy-6y²因式分解
因式分解x²+xy-6y²
x²/xy-x/y
已知实数xy,满足10x²-2xy+y²+6x+1=0,求x+y
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
已知实数x,y满足5x²+2y²+1=6xy+4x-2y,则x²-xy+2000y
计算:(xy-x²)×x-y/xy