Question

If `5^(x+2)=4`, find `x`?

Answer 1

`x=-1.1386`

Explanation:

As `5^((x+2))=4`

`(x+2)log5=log4`

i.e. `x+2=log4/log5=0.60206/0.69897`

i.e. `x+2=0.8614`

and hence `x=0.8614-2=-1.1386`