若实数X,Y满足X^2+4X+Y^2-2Y+5=0,求X+Y的值.
若实数x,y满足x+2y-4的平方根+(2x+y-5)的平方=0,求(x+y)的平方的值.
⑴若实数X,Y满足方程X的平方+Y的平方-2X+4Y+5=0,求X-Y的值.
实数x'y满足x≥y≥1和2x^2-xy-5x+y+4=0求x'y的值
若实数x,y满足x^2+y^2-4x-2y+5=0,求(√x+y)/[√(8y-2x)]
若实数x、y满足x平方+y平方-4x-2y+5=0,求根号8y-2x分之(根号x)+y
已知实数x,y满足根号下2x+y-3+(X-2Y-4)的绝对值=0,求x的平方+立方根y-5的值
若实数x,y满足(x-y-5)的平方+/2x+3y+20/=0,求3x+2y+1的值
若实数x,y满足(x+2y-2)(3x+2y+2)+2(x2+4)=0,求x+y的值.
若实数x y满足,4x^2-y^2-4x+6y+10=0,求x^2+y^2的值
已知实数x,y满足5x^2-3xy+1\2y^2-2x+1\2y+1\4=0,求x,y的值
已知实数X,Y满足√2X-3Y-1+|X-2y+2|=0,求2X-4分之5y的值
问一条数学题:已知实数x、y满足√(2x-3y-1) + |x-2y+2|=0,求2x- 4/5y的值