Sửa đề: \(4^x-3\cdot2^{x+1}+5=0\)
=>\(\left(2^x\right)^2-3\cdot2^x\cdot2+5=0\)
=>\(\left(2^x\right)^2-6\cdot2^x+5=0\)
=>\(\left(2^x-5\right)\left(2^x-1\right)=0\)
=>\(\left[{}\begin{matrix}2^x=5\\2^x=1\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=log_25\\x=0\end{matrix}\right.\)