Question

2^x+2 - 2^x = 96

Tìm x

Answer 1

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

\(=>2^X.\left(2^2-1\right)=96\)

\(=>2^X.3=96\)

\(=>2^X=96:3\)

\(=>2^X=32\)

\(=>2^X=2^5\)

\(=>X=5\)

Answer 2

2^x+2 - 2^x =96

2^x * 2² -2^x *1=96

2^x *(2² -1)=96

2^x *(4-1)=96

2^x *3=96

2^x      =96:3

2^x     =32

2^x       =2⁵

x       =5

Vậy x=5