$${ 4 }^{ x+1 } + { 2 }^{ 2x } =40$$
$x=\frac{\pi n_{1}i}{\ln(2)}+\frac{3}{2}$
$n_{1}\in \mathrm{Z}$
$x = \frac{3}{2} = 1\frac{1}{2} = 1.5$
