Tìm x biết 2^x + 2^x+3 = 144

Tìm x:
${\left(\frac{\mathrm{x}}{1}-\frac{1}{4}\right)}^2=\frac{1}{4}$

$2^{\mathrm{x}}+2^{\mathrm{x}+3}=144$
${81}^{-2\mathrm{x}}·{27}^{\mathrm{x}}=9^5$




Ai nhanh hhaats cs 100 xu đủ 3 câu