Answer: Multiply and then simplify if possible. See
Chapter 7, Problem 70(choose chapter or problem)
Multiply and then simplify if possible. See Example 4. 23 3 + 23 22 1 23 9 - 23 42
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer