Question

Dada à função exponencial f(x) = 4 elevado x, qual o valor de x para que f(x) = 64?

Answer 1

$4^x=64\\\\\left(2^2\right)^x}=\left(2^6\right)\\\\\left(2\right)^{2x}=\left(2^6\right)\\\\2x=6\\\\x=\frac{6}{2}\\\\x=3$