**CHAPTER12**

Numbers to the Fourth and Fifth Powers

**In This Chapter**

- How to calculate a number to the fourth power
- How to calculate a number to the fifth power
- The significance of the ratio

The ways to calculate a number to the fourth and fifth power aren’t so different from what you learned from squares and cubes in Chapters 10 and 11. I think you’ll be quite surprised at how quickly you pick up the formulas for fourth and fifth powers. You may even find yourself not even needing to write things down!

In this chapter, I give you the formulas for ...

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