Question

resolva as equações esponencias a seguir:​

Answer 1

Resposta:

$a)2^{x+2}=72\quad :\quad x=\frac{\ln \left(72\right)}{\ln \left(2\right)}-2$

$b)3^{x-2}=81\quad :\quad x=6$

$c)3^x=\sqrt{81}\quad :\quad x=2$

$d)2^x=\frac{1}{128}\quad :\quad x=-7$