This problem is a checkpoint for simplifying expressions with positive integral exponents. It will be referred to as Checkpoint 4.
Simplify each expression.
Check your answers to parts (a) through (d) by referring to the Checkpoint 4 materials located at the back of your book.
If you needed help simplifying these expressions correctly, then you need more practice. Review the Checkpoint 4 materials and try the practice problems. Also, consider getting help outside of class time. From this point on, you will be expected to simplify expressions like these quickly and easily.
Answers and extra practice are located in the back of your printed textbook or in the Reference Tab of your eBook.
If you have an eBook for A2C, login and then click the following link: Checkpoint 4 Answers and Practice