已知实数x、y满足5x²-3xy+1/2y²-2x+1/2y+1/4=0 求x、y的值
已知实数x、y满足5x²-3xy+1/2y²-2x+1/2y+1/4=0 求x、y的值
已知实数x、y满足x²+4xy+4y²-x-2y+4分之1=,则x+2y的值,
已知实数x,y满足方程(x²+2x+3)(3y²+2y+1)=4/3,求x+y的值
已知非零实数x,y满足x²-4xy+4y²=0,求分式2x-y除以2x+y的值
已知实数x,y满足x²+4y²=4.求f(x,y)=x²+2xy+4y²+x+2
已知实数x,y,满足x²+y²-2x+4y+5=0,试求x,y的值 已知x(x+1)(x+2)(x+
已知5x²+4x-2xy+y²+1=0,求x,y的值
已知X²-5XY+6Y²=0,求(X²+3XY)\2Y²的值
已知x、y是实数,且适合方程(x²+xy-12)²+(xy-2y-1)² =0,求x、y的
1、已知xy满足(x+1)²+1y+21=0试求-2xy·5x²y+(0.5x²y&sup
已知x/y=3,求x²+2xy-3y²/x²-xy+y²的值
已知实数X,Y,Z满足 X²-6XY+10Y²+4Y+∣Z²-3Z+2∣+4=0,求(X+