Question

2^x+2-2^x=96

Answer 1

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

\(\Leftrightarrow2^x\cdot2^2-2^x=96\)

\(\Leftrightarrow2^x\left(2^2-1\right)=96\)

\(\Leftrightarrow2^x\cdot3=96\)

\(\Leftrightarrow2^x=96\div3\)

\(\Leftrightarrow2^x=32\)

\(\Leftrightarrow2^x=2^5\)

\(\Leftrightarrow x=5\)

Vậy x = 5 

Answer 2

 2^(x+2) - 2^x = 96 
<=> (2^x)(2^2) -2^x = 96 
(2^x)[(2^2) -1)] = 96 
2^x = 96/3 = 32 
2^5 = 32 
Đáp số: 
x = 5 

​chúc bn hok tốt

Answer 3

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

\(\Rightarrow2^x\cdot2^2-2^x\cdot1=96\)

\(\Rightarrow2x\left(2^2-1\right)=96\)

\(\Rightarrow2x\cdot3=96\)

\(\Rightarrow6x=96\)

\(\Rightarrow x=16\)