Question

Giai phương trình:

\(\sqrt{x}+9=5-\sqrt{2x}+4\)

Answer 1

\(\sqrt{x}+9=5-\sqrt{2x}+4\)

<=> \(\sqrt{x}+\sqrt{2x}=5+4-9\)

<=> \(\sqrt{x}+4\sqrt{x}=0\)

<=> \(5\sqrt{x}=0\)

<=> \(\sqrt{x}=0\)

<=> \(x=0\)

Answer 2

\(\Leftrightarrow\sqrt{x}+\sqrt{2x}=5+4-9\Leftrightarrow\sqrt{x}\left(1+\sqrt{2}\right)=0\Leftrightarrow x=0\)