1. Objective The student will be able to:
Find square roots.

2. What two numbers can we put in for x to make a true statement.
If x2 = y then x is a of y.
Since 112=121, then 11 is the square root of However, (-11)2=121, so -11 is also a square root of 121.
What two numbers can we put in for x to make a true statement.

3. All positive real numbers have two square roots: a __ root and a ___ root.
To indicate a positive square root of a number y, write
To indicate a negative square root of a number y, write

4. In the expression is the __________ and 64 is the __________.
1. Find the square root:
2. Find the square root:

5. 3. Find the square root:
4. Find the square root:

6. REVIEW
__________ are the squares of the whole numbers.
1,4,9,16,25,36,49,64,81, 100….

7. Irrational numbers

8. Radical Expressions
An expression written with a radical symbol is called a radical expression.
Example:
Evaluate for the given values. a=2,b=3,c=-5
a=-1,b=8,c=20

9. Homework
Pg 502
#25-52
#65-68