Answer
$x=2$ or $x=-1$
Work Step by Step
We need to solve:
$x^{2}10^{x}-x10^{x}=2(10^{x})$
$x^{2}10^{x}-x10^{x}-2(10^{x})=0$
We factor:
$10^{x}(x^{2}-x-2)=0$
$10^{x}(x-2)(x+1)=0$
$10^{x}=0$ or $x-2=0$ or $x+1=0$
$x=\log_{10} (0)$=no solution, or $x=2$ or $x=-1$