\(2015^{2x^2-4x}=1\\ \Leftrightarrow2x^2-4x=0\\ \Leftrightarrow2x\left(x-2\right)=0\\ \Leftrightarrow\left[\begin{array}{nghiempt}x=0\\x=2\end{array}\right.\)
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\(2015^{2x^2-4x}=1\)
\(\Leftrightarrow2015^{2x\left(x-4\right)}=2015^0\)
\(\Leftrightarrow2x\left(x-4\right)=0\)
\(\Leftrightarrow\left[\begin{array}{nghiempt}2x=0\\x-4=0\end{array}\right.\)
\(\Leftrightarrow\left[\begin{array}{nghiempt}x=0\\x=4\end{array}\right.\)
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