Question

Tìm x biết  \(x-2\sqrt{x}\) = 0 

Answer 1

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

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

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

Vậy x = 0; x = 4

Answer 2

\(\Rightarrow x=2\sqrt{x}\)

\(\Rightarrow x=0\) hoặc \(x=4\)