已知x,y满足2x²-2xy+y²+2x+1=0,求(xy)2006次方的值
已知x,y满足2x²-2xy+y²+2x+1=0,求(xy)2006次方的值
已知X²-5XY+6Y²=0,求(X²+3XY)\2Y²的值
已知x/y=3,求x²+2xy-3y²/x²-xy+y²的值
1、已知xy满足(x+1)²+1y+21=0试求-2xy·5x²y+(0.5x²y&sup
已知(4X-2Y-1)²+根号xy-2=0,求4x²y²+xy²的值
已知x/y=3,求x²+2xy-3y²/x²-xy+y³的值
已知实数x、y满足5x²-3xy+1/2y²-2x+1/2y+1/4=0 求x、y的值
已知,整数x、y满足x²+xy+2y²=7,求x、y的值.
已知5x²-4xy+y²-2x+1=0.求(x-y)的2006次方的值.
已知x+y=-3 求(2x²+xy+3y²)-(x²-xy+2y²)的值
已知x+y=-3,求(2x²+xy+3y²)-(x²-xy+2y²)的值.
已知3x+2y=0,求代数式(x²+xy-y²)÷(x²-xy+y²)的值.