Question

\(\sqrt{x-2}+\sqrt{y+2000}+\sqrt{z-2001}=\frac{1}{2}\left(x+y+z\right)\)

Giải phương trình trên

 

Answer 1

nhân cả 2 vế với 2 ta có

\(2\sqrt{x-2}+2\sqrt{y+2000}+2\sqrt{z-2001}=x+y+z\)

\(\left(x-2\right)-2\sqrt{x-2}+1+\left(y+2000\right)-2\sqrt{y+2000}+1+\left(z-2001\right)-2\sqrt{z-2001}+1=0\)

\(\left(\sqrt{x-2}-1\right)^2+\left(\sqrt{y+2000}-1\right)^2+\left(\sqrt{z-2001}-1\right)^2=0\)

cho cả 3 cái =0 thì giả ra x=3  y=-1999  z=2002

Answer 2

how about the technology in the future Which things will happen Draw a picture about the technology in the future Note You can draw everything but they are different from now Please help me