Objective The student will be able to:

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Presentation transcript:

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

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 121. 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.

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

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

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

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

Irrational numbers

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

Homework Pg 502 #25-52 #65-68