若实数x、y满足（x+5）^2+（y-12）^2=196,则x^2+y^2的最小值

已知实数x,y满足y=|x-1|若x+2y 若实数xy满足x-y+1 若实数x,y是满足1 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 设实数x,y满足（x-1）^2+(y+2)^2=5,则x-2y的最大值 若实数x,y满足y 若实数x,y满足不等式y 若正实数x,y满足x+y+1/x+1/y=5,则x+y的最大值是多少 若实数x,y满足x^2+y^2-4x-2y+5=0,则x+y/2x-1 若实数x,y满足x的平方+y的平方-4x-2y+5=0,则（x+y）/2x-3= 若实数x,y满足x-4y+3≤0,3x+5y-25≤0,x≥1,则2x-y的最大值是多少 若实数x,y满足x 若实数x,y满足x 若实数x,y满足x-y+1》=0,x+y>=0,x 若实数x,y满足x-y+1>=0,x+y>=0,x 若实数x,y满足（x的平方+6x+12）（5y的平方+2y+1）=12/5,则xy的值是 若实数x,y满足[x+根号（x^2+1）][y+根号(y^2+1)]=1,求x+y 若实数x,y满足1/x-1/y=5,则分式3x-2xy-3y/x+xy-y的值等于?