求满足2X^3-3X^2+(2-Y)X+Y-7=0的正整数X,Y的值

实数X,Y满足(X-2)方+Y方=3 求Y/X的最大值 已知X,Y满足|X-Y-1|+（X+Y-3)^2=0求X,Y的值 已知实数x.y满足根号(x+y-8)+根号(8-x-y)=根号(3x-y-4)+根号(x-2y+7),求x,y 如果实数x,y满足(x-2)2+y2=3,求 y/x的最小值; 变量x,y满足约束条件,x+y>=3,x-y>=-1,2x-y 若x、y满足2x+y=6,x-3y=1,求7y(x-3y)²-2(3y-x)³的值 已知y=f(x)满足2f(x)+3f(-x)=4x求f(x) 设变量x.y满足条件3x+2y 当x,y满足条件|x+3|+|y-2| 设实数x、y满足方程2x^2+3y^2=6y,求x+y的最大值 若变量x,y满足约束条件{x>=-1;y>=x;3x+2y 已知：x,y满足|2x-y|+|y-1/2|=0,求7x-3y的值. 设实数x、y满足方程2x²+3y²=6y,求x+y的最大值 已知x、y满足2/1|x-y|+|1-y|=0,求7x-3y的值 以知x,y满足1/2[x-y]+[1-y]=0,求7x-3y的值 已知实数x,y满足x^2+4y^2=8,求3^-x+9^x的最小值 已知实数x,y满足x^2+4y^2=8,求3^-x+9^x的最小值 x,y 满足x(x-2)-y(y-6)=-10,求x,y的值