Các câu hỏi tương tự
tim x y biet x^2+y^2 + z^2 -xy-3y-2z+4=0
cho A= x^2+y^2+z^2+xy+yz+zx .Tim GTNN cua A ,biet x+y+z=3
tim x,y biet \(\frac{1}{x}+\frac{1}{y}+\frac{1}{z}=0\)
tinh gtbt: \(A=\frac{xy}{z^2}+\frac{yz}{x^2}+\frac{zx}{y^2}\)
tim x,y biet \(\frac{1}{x}+\frac{1}{y}+\frac{1}{z}=0\)
tinh gtbt: \(A=\frac{xy}{z^2}+\frac{yz}{x^2}+\frac{zx}{y^2}\)
tim x,y biet \(\frac{1}{x}+\frac{1}{y}+\frac{1}{z}=0\)
tinh gtbt: \(A=\frac{xy}{z^2}+\frac{yz}{x^2}+\frac{zx}{y^2}\)
tim x,y biet \(\frac{1}{x}+\frac{1}{y}+\frac{1}{z}=0\)
tinh gtbt: \(A=\frac{xy}{z^2}+\frac{yz}{x^2}+\frac{zx}{y^2}\)
tim x,y biet \(\frac{1}{x}+\frac{1}{y}+\frac{1}{z}=0\)
tinh gtbt: \(A=\frac{xy}{z^2}+\frac{yz}{x^2}+\frac{zx}{y^2}\)
tìm xy nguyen biet (x+y-2)^2+(y+3)^2=0 tim xy thoa man x^2-6x+10=1/|x-3|+1
X^2+2y^2+z^2-2(xy+2y+2z+8)=0 Tim x y z