Các câu hỏi tương tự
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 bo ba x y z thoa man
X^2+2y^2+2^2-2(xy+2y+2z+8)=0
X^2+2y^2+z^2-2(xy+2y+2z+8)=0 Tim x y z
tim x y z thoa man x2+y2+z2-xy-3y-2z+4=0
Cho x,y,z la cac so thuc khac 0. Thoa man : z2+z(xy-xz-yz)=0
Chung minh rang x2+(x+2y-z)2 / y2+(2x+y-z)2 = x+2y-z / 2x+y-z
tim x,y,z thuoc Zduong thoa man
x^2+y^2+z^2<xy+3y+2z
X^2+2y^2+z^2-2(xy+2y+2z+8)=0
cho x>=y>=z>0.chứng minh \(\frac{x^2y}{z}+\frac{y^2z}{x}+\frac{z^2x}{y}>=x^2+y^2+z^2\)
minh dang can gap lam ai giup minh vs
tim tat ca cac so nguyen x,y thoa man x^3+x^2+2-2y=xy