1. Review: 9.1a Mini-Quiz 1. 25 2. 3. 0 4. –4 Find the positive and negative nth roots of each number. 5.The fourth root of –256 6.The cube root of 27 7.The fourth root of 1/81 8.The cube root of 1/8 Find the principal nth roots of each number. 9.The sixth root of 64 10.The fifth root of –1 Find the positive and negative square roots of each number.

2. Objective: The student will define perfect square, rational and irrational numbers. The student will classify numbers as rational or irrational. The student will learn the technique for estimating radicals.

3. Lesson 9-1b Roots and Radicals

4. A.whole number B.irrational number C.rational number D.natural number Lesson 2 CYP1 Name the set of numbers to which the real number belongs.

5. A.whole number B.irrational number C.rational number D.natural number Lesson 2 CYP1 Name the set of numbers to which the real number belongs.

6. Lesson 1 Ex3 Estimate Square Roots The first perfect square less than 22 is 16. Answer: 5 The square root of 22 is between the whole numbers 4 and 5. Since 22 is closer to 25 than 16, you can expect that is closer to 5 than 4. The first perfect square greater than 22 is 25. Plot each square on a number line.

7. Lesson 1 Ex3 Answer: –18

8. 1.A 2.B 3.C 4.D Lesson 1 CYP3 A.6 B.7 C.8 D.9

9. 1.A 2.B 3.C 4.D Lesson 1 CYP3 A.12 B.–11 C.–12 D.–13

10. 1.A 2.B 3.C 4.D Lesson 1 CYP3 A.2 B.2/3 C.1 D.–14

11. Homework 507/73-103 odd 73. 75.