Question 896106
To type an exponent use the ^ which points up to 
where exponents are supposed to go, and then
put the exponent in parentheses, like this:

2^(x+3) - 5 = 0 
<pre>
{{{2^(x+3) - 5 = 0}}}

{{{2^(x+3) = 5}}}

Take logs of both sides

{{{log(2^(x+3))=log(5)}}}

Use the principle {{{log(B^A)=A*log(B)}}}

{{{(x+3)log(2)=log(5)}}}

Divide both sides by log(2)

{{{x+3=log(5)/log(2)}}}

Subtract 3 from both sides:

{{{x=log(5)/log(2)-3}}}

Get a calculator:

{{{x=-0.6780719051}}}

Edwin</pre>