Question

Bài 2: Tìm x

d) \(2^x\)+\(2^{x+3}\)=144

Answer 1

\(2^x+2^{x+3}=144\)

\(\Rightarrow2^x\left(1+2^3\right)=144\)

\(\Rightarrow2^x.9=144\Rightarrow2^x=16\Rightarrow x=4\)