Question

2^𝑛 + 2^𝑥+3 = 144 chỉ mình câu này zới mn=))    

Answer 1

Sửa đề : \(2^x+2^{x+3}=144\\ =>2^x.\left(1+2^3\right)=144\\ =>2^x=\dfrac{144}{9}=16=2^4\\ =>x=4\)

Answer 2

`@` `\text {Ans}`

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

`\Rightarrow 2^x + 2^x + 2^3 = 144`

`\Rightarrow 2^x (8+1)=144`

`\Rightarrow 2^x*9=144`

`\Rightarrow 2^x=144 \div 9`

`\Rightarrow 2^x = 16`

`\Rightarrow 2^x = 2^4`

`\Rightarrow x=4`