Lesson 8.1 Zero and Neg Exponents.notebook
March 12, 2013
8.1 Zero and Negative Exponents
Objective
Be able to simplify expressions with zero and negative exponents. 2
­3 = ­9
2 = 9
(­3)
WHY?
Negative numbers and exponents
­5
2
2
­(5)
(­5)
2
3
­5
3
­(5)
(­5)
3
Lesson 8.1 Zero and Neg Exponents.notebook
March 12, 2013
Fill in the table
What pattern do you see developing?
Use the pattern from the previous table to fill in this table:
What happens when an exponent is zero?
What do you notice happens when an exponent is negative?
Lesson 8.1 Zero and Neg Exponents.notebook
March 12, 2013
When zero is the exponent the value is automatically 1.
A negative exponent is a MOVER. Basically it moves the power from numerator to denominator or vise versa.
"Move it and Lose it!!"
Lesson 8.1 Zero and Neg Exponents.notebook
March 12, 2013
Use the previous definitions to simplify
Negative exponents! Move it and lose it!
4
­3
0
­123
Try these!!
3
­4
­7
0
4
­3
­2
­3
Negative exponents! Move it and lose it!
Lesson 8.1 Zero and Neg Exponents.notebook
March 12, 2013
Simplify : Look at each piece separately!
4yx
­3
1
w ­4
Try these!!
­5
11m
­4 2
7s t
n­5
2
v2
a ­3