实数x'y满足x≥y≥1和2x^2-xy-5x+y+4=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
实数x y满足x≥y≥1和2x²-xy-5x+y+4=0求x+y之值
实数x、y满足x≥y≥1和2x^2-xy+5x-y+4=0,则x+y=___
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5x²-3xy+1/2y²-2x+1/2y+1/4=0 求x、y的值
实数x,y满足x≥y≥1和2x2-xy-5x+y+4=0,则x+y=______.
实数X,Y满足X大于等于Y大于等于1和2X平方-xy-5x+y+4=o,则x+y的值
已知实数x y满足x×x+y×y-xy+2x-y+1=0 试求x y的值
实数XY满足X*X+Y*Y+2X-4Y+1=0,求Y/(X-4)的最大值和最小值及根号下X*X+Y*Y+2X+1的最大值
已知实数xy满足x^2+y^2-6x+4y+13=0求x^y的值
已知实数x,y满足(x2)+(y2)-xy+2x-y+1=0,求x,y的值
已知实数x、y满足X2+y2-xy+2x-y+1=0,试求x、y的值