\(\left(2x-1\right)^{2018}=\left(2x-1\right)^{2016}\)
\(\Rightarrow\left(2x-1\right)^{2018}-\left(2x-1\right)^{2016}=0\)
\(\Rightarrow\left(2x-1\right)^{2016}\left[\left(2x-1\right)^2-1\right]=0\)
\(\Rightarrow\orbr{\begin{cases}\left(2x-1\right)^{2016}=0\\\left(2x-1\right)^2-1=0\end{cases}}\Rightarrow\orbr{\begin{cases}\left(2x-1\right)^{2016}=0\\\left(2x-1\right)^2=1\end{cases}}\)
TH 1 : \(\left(2x-1\right)^{2016}=0\Rightarrow2x-1=0\Rightarrow2x=1\Rightarrow x=\frac{1}{2}\)
TH 2 : \(\left(2x-1\right)^2=1\Rightarrow\orbr{\begin{cases}2x-1=1\\2x-1=-1\end{cases}}\Rightarrow\orbr{\begin{cases}2x=2\\2x=0\end{cases}}\Rightarrow\orbr{\begin{cases}x=1\\x=0\end{cases}}\)
Vậy \(x\in\left\{\frac{1}{2};1;0\right\}\)
_Chúc bạn học tốt_
( 2x - 1 )2018 = ( 2x - 1 )2016
( 2x - 1 )2 = 0
( 2x )2 - 1 = 0
4x2 = 1
x2 = 1 / 4 \(\Rightarrow\orbr{\begin{cases}x=\frac{1}{2}\\x=-\frac{1}{2}\end{cases}}\)
