Tim bo ba x y z thoa man

X^2+2y^2+2^2-2(xy+2y+2z+8)=0

cho x,y,z>0 va thoa man x+y+z=1. Tim GTNN cua F= 14(x² +y² +z² ) +\(\frac{xy+yz+zx}{x^2y+y^2z+z^2x}\)

tim cac so nguyen x, y thoa man x>y>1 va 2x + 2y + 1 chia het cho xy

Tim x y z thoa man x^2+2y^2+z^2-2(xy+2y+2z+8)=0 can rat gap

im x,y thoa man: 2x^t2+4y^2-15xy-12x+45y-24=0 va x^2-2y^2-3x+3y+xy=0

tim cac so x,y thoa man :2x^2+y^2-2y=2(xy-1)

Tim bo ba x y z thoa man

X^2+2y^2+2^2-2(xy+2y+2z+8)=0

Giup Minh nha can gap lam

Tim gtln va nho nhat cua x, y thuc thoa man:

X² + XY + Y² - Y = 0

a)Tim cap (x,y) nguyen duong thoa man xy=3(y-x)

b)cho 2 so x,y >0 thoa man x+y = 1

Tim GTNN cua M=(x^2+1/y^2)(y^2+1/x^2)