Toán (X – 2007) mũ x+2019 – (x-2007) mũ x+2007=0 01/07/2021 By Aubrey (X – 2007) mũ x+2019 – (x-2007) mũ x+2007=0
Ý bn là: $(x-2017)^{x+2019}-(x-2017)^{x+2017}=0$ $⇔(x-2017)^{x+2017}[(x-2017)^2-1]=0$ $⇔$\(\left[ \begin{array}{l}(x-2017)^{x+2017}=0\\(x-2017)^2-1=0\end{array} \right.⇔\) \(\left[ \begin{array}{l}x-2017=0\\x-2017=±1\end{array} \right.⇔\) $x=2016;2017;2018$ Trả lời
Ý bn là:
$(x-2017)^{x+2019}-(x-2017)^{x+2017}=0$
$⇔(x-2017)^{x+2017}[(x-2017)^2-1]=0$
$⇔$\(\left[ \begin{array}{l}(x-2017)^{x+2017}=0\\(x-2017)^2-1=0\end{array} \right.⇔\) \(\left[ \begin{array}{l}x-2017=0\\x-2017=±1\end{array} \right.⇔\) $x=2016;2017;2018$