1. 5-Minute Check on Chapter 2
Transparency 3-1
5-Minute Check on Chapter 2
Evaluate 42 - |x - 7| if x = -3
Find 4.1  (-0.5)
Simplify each expression
3. 8(-2c + 5) + 9c (36d – 18) / (-9)
A bag of lollipops has 10 red, 15 green, and 15 yellow lollipops. If one is chosen at random, what is the probability that it is not green?
Which of the following is a true statement
Standardized Test Practice: A
8/4 < 4/8 B
-4/8 < -8/4 C
-4/8 > -8/4 D
-4/8 > 4/8
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2. Operations with Radical Expressions
Lesson 11-2
Operations with Radical Expressions

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Transparency 2

4. Transparency 2a

5. Objectives Add and subtract radical expressions
Multiply radical expressions

6. Vocabulary
none new

7. Addition and Subtraction PoE
Properties of Equality (PoE) are based on the concept that as long as you do the same thing to both sides of an equation, then you have not changed anything.
Addition PoE
For any numbers a, b, and c, if a = b, then a + c = b + c
You can add the same thing to both sides of an equation without changing it.
Subtraction PoE
For any numbers a, b, and c, if a = b, then a - c = b - c
You can subtract the same thing from both sides of an equation without changing it.

8. Example 1 A. Simplify Distributive Property Answer: Simplify.
B. Simplify
Commutative Property
Distributive Property
Answer:
Simplify.

9. Example 2
Simplify
Answer: The simplified form is

10. Example 3 Find the area of a rectangle with a width of and a length of
To find the area of the rectangle multiply the measures of the length and width.

11. Example 3 cont Multiply Prime factorization Simplify
First terms
Outer terms
Inner terms
Last terms
Multiply
Prime factorization
Simplify
Combine like terms
Answer: The area of the rectangle is square units.

12. Summary & Homework Summary: Homework:
Radical expressions with like radicands can be added or subtracted
Use the FOIL method to multiply radical expressions
Homework: pg