## If 3^x – 3^(x-3) = 2106, what is the value of x? GMAT Factoring Question

If 3^x – 3^(x-3) = 2106, what is the value of x? This is a fairly tricky factoring question, but it goes back to one of the general factoring principles: always factor out the common term. Here’s where we start: In our case, the common term is 3^x. That leaves us with… …on the left … Read More