Question

3^{2x} - 1 = 80 e uma equação exponencial

Answer 1

$3^{2x} -1=80\\\\3^{2x}=80+1\\\\3^{2x}=81\\\\81|3\\\227|3\\\09|3\\\03|3\\\01\\\\81=3^4\\\\3^{2x}=3^4\\\\2x=4\\\\x= \dfrac{4}{2}$

$\boxed{x = 2}$