1. Simplify each expression completely.
Session 17
Warm-up
Simplify each expression completely.

2. 1.5 Zero & Negative Exponents

3. Use your calculator to evaluate.
What can you conclude? 50
(-2)0
(.45)0
(1/7)0
(1239)0
A nonzero number to the zero power equals one.

4. Negative exponents move terms to the other part of the fraction.

5. Negative exponents move terms to the other part of the fraction
Negative exponents move terms to the other part of the fraction. (reciprocal)
Example 1: Evaluate
4 is downstairs.
We will move it…

6. x is downstairs. We will move it…
Example 2
x is downstairs.
We will move it…

7. -9 is upstairs. We will move it…
Example 3

8. Now let’s include what we learned from last class.
What do we know that we can do with these exponents?
What do we know that we can do with these exponents?

9. Evaluate the expression without using a calculator.

10. Rewrite the expression with positive exponents.

11. Homework
pg #’s 2-18 even, 24