Question

Come se resolve?
$3 * 2^{-2x} - \frac{1}{2x} = 0$

Obrigada :D

Answer 1

Simplificando dá isso:

$3*2^{-2x}- \frac{1}{2x}=0 \\ \\ 3*\frac{1}{2^{2x}}- \frac{1}{2x}=0 \\ \\ 3*\frac{1}{4^x}- \frac{1}{2x}=0 \\ \\ \frac{3(2x)-4^x=0}{(4^x)(2x)} ==> \ 6x-4^x=0 \ ==> -4^x=-6x \ \ \ *(-1)==> 4^x=6x$