2.5 The power zero

Now, what happens if you divide a number by itself? You should get the answer 1. For example

so 10⁰ must equal 1. This must be true for any number (except for 0, because there is a problem in defining 0⁰). So, for example, 7⁰ = 1, 123⁰ = 1, 1000⁰ = 1. It even works for negative and decimal numbers. Check a few numbers on your calculator to see that raising to the power 0 gives 1.