Question 886564

Solve the following equation for x:

log2(x + 7) + log2(x + 8) = 1

Note: Be sure to plug any solutions back into the original equation; if they don't work (e.g., you're forced to take the logarithm of a negative number, which is not possible), discard that solution.
<pre>
x = - 6.  
x = - 9 is EXTRANEOUS.