Question

Đố giải dc bài này nhé!

2^x+3+2^x=144

bạn nào giải dc mk tick cho :D

Answer 1

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

\(2^x.9=144\)

\(2^x=16=2^4\)

\(=>x=4\)

Answer 2

2^x+3 + 2^x = 144

2^x . 2³ + 2^x = 144

2^x . ( 2³ + 1 ) = 144

2^x . 9 = 144

2^x = 144 : 9

2^x = 16

2^x = 2⁴

=> x = 4

hok tốt

Answer 3

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

\(\Rightarrow\)\(2^x.2^3+2^x.1=144\)

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

\(\Rightarrow\) \(2^x.9=144\)

\(\Rightarrow\)\(2^x=16\)

\(\Rightarrow\)\(2^x=2^4\)

\(\Rightarrow\)\(x=4\)