1. CHAPTER P
SECTION 1 NOTES

2. EXPONENTIAL NOTATION
bn = b•b•b•b….•b
EXAMPLES:
1. 53
2. 25
3. -34

3. EVALUATING ALGEBRAIC EXPRESSIONS USING THE ORDER OF OPERATIONS
PARENTHESE (),[],{}
EXPONENTS
MULTIPLCATION
DIVISION
ADDITION
SUBTRACTION
EVALUATING AN ALGEBRAIC EXPRESSION: FIND THE VALUE OF AN EXPRESSION FOR A GIVEN VALUE OF A VARIABLE.
(X-6)3 FOR X = 8

4. 2. X3 + 4X2 – 15 FOR X = -4
3. 2X −4Y X −2 FOR X = 4 AND Y = 5

5. ᴜ ∩ Ø INTERSECTION AND UNION OF SETS!!!!!!!!!!! SYMBOLS: INTERSECTION
NULL SET OR EMPTY SET
DEFINITION:
The intersection of sets A and B written A∩B is the set of elements
common to sets A and B.
The union of sets A and B, written AᴜB, is the set of elements that are
members of set A or set B.
The empty set or null set is the set that has no elements in it.

6. EXAMPLES:
A = {2,5,7,9,13,24} B = {3,5,7,13,26} C = {-2,-6,-14,-20,-56}
FIND:
1. A∩B
2. AᴜC
3. B∩C
4. AᴜBᴜC

7. INEQUALITY SYMBOLS:
>
< ≤ ≥

8. EXAMPLES:
TRUE OR FALSE
> 45
-41 ≥ - 50
29 ≤ 12
-73 < -83
14 > 14
-67 ≥ -67

9. { ││ ABSOLUTE VALUE DEFINITION:
The Absolute Value of a given number is the distance that number is from zero on a number line {
X if X ≥ 0
EXAMPLES:
X =
-X if X < 0
│5│
│-34│
│15-56│
-6│3│
│-12│-│10│
│ │
SYMBOLS: ││

10. DISTANCE BETWEEN TWO POINT ON THE REAL NUMBER LINE
If a and b are any two points on a real number line, then the distance between a and b is given by:
│a - b│ or │b - a│
EXAMPLES:
12 and 45
-6 and 7
-45 and -8

11. HOMEWORK:
PAGE {1-74} THE EVENS