Given exponential equation is [tex] 2^x=128 [/tex]
Now question says to write the given exponential equation in logarithmic form.
To do that we use the following conversion formula
[tex] a^b=c \Rightarrow \log_{a}c=b [/tex]
In this formula we see that base "a" remains at it's position but b and c switch.
So we will keep base "2" fixed at it's position and switch x with 128.
Hence final answer will be
[tex] \log_{2}128 = x [/tex]
