Question

Tìm x

2x+2^x+3=144

Answer 1

2^x + 2^x+3 = 144

\(\Leftrightarrow\)2^x. (1 + 2³) = 144

\(\Leftrightarrow\)2^x. 9 =144

\(\Leftrightarrow\)2^x=16

\(\Leftrightarrow\)2^x = 2⁴

\(\Leftrightarrow\)x = 4

vậy x = 4

ủng hộ nha!

Answer 2

Ta có: 2^x + 2^{x + 3} = 144

=> 2^x + 2^x . 2³ = 144

=> 2^x .(1 + 2³) = 144

=> 2^x = 16

=> 2^x = 2⁴

=> x = 4 

   Vậy x = 4

Answer 3

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

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

\(2^x\left(1+8\right)=144\)

\(2^x.9=144\)

\(2^x=16\)

\(\Rightarrow x=4\)