ta có: |x-2019|>=0 với mọi x
=>2019-|x-2019|<=2019-0=2019 với mọi x
=>x<=2019
=>2019-|x-2019|=2019-2019-x=-x=x
=>x=0
ta có: |x-2019|>=0 với mọi x
=>2019-|x-2019|<=2019-0=2019 với mọi x
=>x<=2019
=>2019-|x-2019|=2019-2019-x=-x=x
=>x=0
tìm x,y,z thuộc N,biết :
a)A=(3x-5)^2006+(y^2-1)^2008+(x-z)^2100=0
b)B=(2x-1)^2008+(y-2:5)^2008+/x+y-z/=0
tìm x,y,z biết: (2x-1)^2008+(y-2/5)^2008+| x+y+z|=0
Tìm x; y; z :
a) \(2009-\left|x-2009\right|=x\)
b) \(\left(2x-1\right)^{2008}+\left(y-\dfrac{2}{5}\right)^{2008}+\left|x+y-z\right|=0\)
Tìm x, y, z biết: (2x-1)^2008+(y-2/5)^2008+|x+y-z|=0
Tìm x; y; z:
a) |x - 2| - |2x+3| - x = 0
b) |x - 7| + 2x+5=6
c)(3x-5)2006+(y2-1)2008+(x-z)2010 = 0
d) 2009- |x - 2009| = x
e)(2x-1)2008+(y- \(\frac{2}{5}\))2008+ |x+y - z| =0
Tìm x y z biết
\(\left(2x-1\right)^{2008}+\left(y-\frac{2}{5}\right)^{2008}+\left|x+y-z\right|=0\)
tìm xyz
(2x-1)^2008+(y-2/5)^2008+\x+y+z\=0
Tìm x; y ; z biết : (2x-1)^2008 + (y-2/5)^2008 + I x+y-z I = o
(2x-1)^2008+(y-2/5)^2008+Ix+y-zI=0
tìm x, y, z