Question

tìm x

2^x+2 - 2^x = 96

Answer 1

\(2^{x+2}-2^x=96\)

\(\Rightarrow2^x.4-2^x=96\)

\(\Rightarrow2^x\left(4-1\right)=96\)

\(\Rightarrow2^x=32\)

\(\Rightarrow x=5\)

Vậy x = 5

Answer 2

\(2^{x+2}-2^x=96\)

\(\Rightarrow2^x.4-2^x=96\)

\(\Rightarrow2^x\left(4-1\right)=96\)

\(\Rightarrow2^x.3=96\)

\(\Rightarrow2^x=32\)

\(\Rightarrow x=5\)