1. Review 23 x 28 45 x 83 417/43 2x4 Identify what the 2 is.
Identify what the x is.
Identify what the 4 is.

2. 9.4 Negative and Zero Exponents
Objective: students will no how to solve problems using the negative and zero exponent rule.

3. Informations Negative Exponents Ex: 5-2 = 1 52 Zero exponents
Exponent is integer
A-n = 1 / an
Ex: 5-2 = 1 52
Zero exponents
Number raised to zero answer is 1
a0 = 1
Ex: 3240 = 1

4. Examples
7-3
5-2
6-4
1,000,000,0000
4y-2 50
1200
a-8b4

5. St. Examples
13-7
xy0
8-10
1210
c3d-2
d-3e-7 60
8f-1

6. Information Rewrite fraction without division bar. 1 / 16 11/c6 1/98
Prime factor number denom. and move to num.
Apply negative sign to exponent
1 / 16
11/c6
1/98
4 / x4

7. St. Examples – get rid of fraction bar
1 / 102
1 / 25
4 / d
11 / c4
1 / 19
8c5
4y / x3
9a2 / b3

8. Powers Neg. Exponents
3-7 x 310
2-5 / 2-4
5-8 x 5-4
72 / 7-5

9. More Examples 5k3 / k-9 34 x 3-7 2s-5 x s3 26w-4 / 13w-12 b-5 x b-12
11g2 / g-4

10. Wrap-up
Questions/Comments
IC/HW: Workbook pg. 121