Question

Resolva a inequação:

3*4× ≤ 72-6*4×


OBS: O X É ELEVADO!!!

Resposta: 3/2, necessito da conta!

Answer 1

$3*4^x \leq 72-6*4^x\\\\3*4^x+6*4^x \leq 72\\\\9*4^x \leq 72\\\\4^x \leq \frac{72}{9}\\\\2^{2x} \leq 8\\\\2^{2x} \leq 2^3\\\\2x \leq 3\\\\x \leq \frac{3}{2}$