Question

[Lê Việt Phương]

x50=x

Answer 1

[Nguyễn Lê Phước Thịnh]

\(x^{50}=x\)

=>\(x^{50}-x=0\)

=>\(x\left(x^{49}-1\right)=0\)

=>\(\left[{}\begin{matrix}x=0\\x^{49}-1=0\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=0\\x=1\end{matrix}\right.\)

Answer 2

[Phung]

\(x^{50}=x\)

\(x^{50}-x=0\\\)

\(x\cdot x^{49}-x\cdot1=0\)

\(x\cdot\left(x^{49}-1\right)=0\)

\(x=0\) hoặc \(x^{49}-1=0\)

\(x=0\) hoặc \(x^{49}=1\)

\(x=0\) hoặc \(x=1\)

vậy \(x=0\) hoặc \(x=1\)