1. Get papers sit down &quietly work on bellringer
= =
/-7

2. Get papers sit down &quietly work on bellringer
= =
/-7 = -5 -2 = 7 3

3. 2-1 Powers and Exponents

4. Defintion exponent base The number times the base is multiplied.
The number of bases there are.
The number being used as a factor.
The number being multiplied over and over again.

5. base
The number being used as a factor.
The number being multiplied over and over again.
5 x 5 x 5
The number being multiplied over again is 5
Base

6. exponent
The number times the base is multiplied.
The exponent tells us to multiply 5 three times.
The number of bases there are.
Exponent

7. Defintion
power
a number expressed using an exponent.

8. power
a number expressed using an exponent.
Power

9. Ch. 2-1 Powers and Exponents Recall the order of Operations:
-An exponent tells how many times a number, or base, is used as a factor.
Example: 23 = 2 * 2 * 2 where 2 is the base and 3 is the exponent
-An expression using a base and an exponent is a power.
Example: 42 is a power
Example 1: Write the following expressions using exponents.
a.) 2 * 2 * 5 * 5 * 5 * 5 b.) a * a * a * a * b * b * b
22 * 54
a4 * b3
Recall the order of Operations:
1.) Work inside grouping symbols
2.) Simplify Powers (exponents)
3.) Multiply and divide from left to right whatever comes first
4.)Add and subtract from left to right whatever comes first

10. Example 1: Simplify the following powers below.
a.)(-5)4 b.) c.) (-2)3
625
-25 -8
*Make sure that if the negative sign is in the parentheses you include it when you multiply that number by itself however many times.
*If it is not inside parentheses then your answer is ALWAYS negative!
Example 2: Simplify each expression below.
a.) 26 – (2 * 5)2 b.) * 32
26 – (10)2
* 9
26 – 100 =
-74
= 50

11. c.) (-3)2 + 12 * 2 d.) -22 + 6 * 1 9 + 12 * 2 -4 + 6 * 1 -4 + 6 9 + 24
= 33
= 2

12. Homework
Pg 70 #10-28, 32, 36
evens only
Show work for 24, 26, and 28