Hi,
I would like to ask how to solve the following, as I didn't understand the answer given in the book:
Check Your Skills
19. Can these expressions be simplified (i.e. reduced to a single term)?
c. 2(2^n + 3^n)
This is the answer in the book (p.96): "Half of this expression can be simplified, namely the part that involves the common base, 2: 2^n+1 + 2 x 3^n. It may not be much prettier, but at least you've joined up the common terms."
I don't understand why this is.
Thanks!!
Sophia