1. Rational and Irrational Numbers

2. √ 3 64 Index Radical Radicand

3. Solve for each variable: 1. √36 = x 2. √169 = y 3. √1= z Ask Yourself: What number multiplied by it’s self will give me ___?

4.  What if a negative is in front of the square root?  What if a negative is inside the square root? The answer is negative. The answer is an imaginary number. We don’t have to worry about imaginary numbers in 8 th grade.

5.  What if the radicand is not a perfect square? Next week we will learn how to determine what two integers the number is between. Today you may use a calculator to find the answer.

6.  What if the radicand is a fraction? Example: √ 4 9 = √ √ 4 9 = 2 3 You Try √ 25 81