- A Pre-Test Read and understand each item carefully and encircle the correct answer.


1. How many principal roots does a number have? a. At most two c. Two only b. At most one d. One only

2. What are the roots of 81? a. - 9 and -9 b. 9 and 9 c. 9 and -9 d. 27 and 3

3. What is V169 equal to? a. #16 b. +13 C.-12 d.-13

4. Which of the numbers below is NOT irrational? b. 15 c. 14 d.-13

5. Which of the following is an irrational number? a. 19 b. V25 d. 146 V a. V16 a. vg C. 736​