Question

tìm x, biết 

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

Answer 1

Sửa lại 

<=>2^x+2^x.2³=144

<=>2^x(1+2³)=144

<=>2^x.9=144

<=>2^x=144:9=16=2⁴

=>x=4

Answer 2

<=>2^x+2^x.2³=144

<=>2^x(1+2³)=144

<=>2^x.9=144

<=>2^x=144:9=16=2⁴

=>x=4

Answer 3

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

\(\Leftrightarrow2^x.\left(1+2^3\right)=144\)

\(\Leftrightarrow2^x.9=144\)

\(\Leftrightarrow2^x=144:9\)

\(\Leftrightarrow2^x=16\)

\(\Leftrightarrow x=4\)

Answer 4

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

\(2^x\left(1+2^3\right)\)

\(2^x.9=144\)

=>\(2^x=144:9=16\)

=>x=8