Các câu hỏi tương tự
tim x,y biet x^2+y^2/x^2+1+y^2=x^2/x^2+1 + y^2/y^2+1
bai 1: Tim x biet
\(\hept{\begin{cases}x-y=\frac{3}{10}\\y\left(x-y\right)=-\frac{3}{50}\end{cases}}\)
bai 2: Tim x, y biet:
x+\(\left(-\frac{31}{12}\right)^2\)=\(\left(\frac{49}{12}\right)^2\)-x=y2
Bai 9: Tim x,y,z biet:
(x-1)2+(x+y)2+(xy-z)2=0
tim x y z biet x-1/2=y-2/3=z-3/4 biet x-2y+3z=14
tim x,y,z biet y+z+1=x+z+2/y=x+y-3/2=1/x+y+z
tim y biet
2/y+3=3/y+8
tim x,y,z biet x-y=x:y=2.(x-y)
tim x,y,z biet x^2+y^2+z^2=2015
tim x,y biet:36-y mu 2=8(x-2021) mu 2
Tim x,y biet: 25y-y^2= 8(x-2012)^2