Question

Tìm x biết:

\(2x-\sqrt{x}=0\)

Answer 1

\(x\ge0\)

\(\Rightarrow\sqrt{x}\left(2\sqrt{x}-1\right)=0\)

\(\Rightarrow\sqrt{x}=0\Rightarrow x=0\)

hoặc \(2\sqrt{x}-1=0\Rightarrow2\sqrt{x}=1\Rightarrow\sqrt{x}=\frac{1}{2}\Rightarrow x=\frac{1}{4}\)

Vậy x = 0 ; x = 1/4

Answer 2

 

\(\Leftrightarrow\sqrt{x}\left(2\sqrt{x}-1\right)=0\)

x=0

hoạc x=\(\frac{1}{4}\)