You've learned about rational expressions and radical expressions from previous modules. This time, you will learn how to simplifying radical expressions using the laws of radicals. WHAT I NEED TO KNOW LEARNING COMPETENCY The learners will be able to: • Simplify radical expression using the laws of radicals Rationalize a fraction with radical in the denominator WHAT I KNOW Find out how much you already know about the module. Choose the letter of the best answer. After taking and checking this short test, take note of the items that you were not able to answer correctly and look for the right answer as you go through this module. 1. When an exact answer is asked, we must express it as a radical expression in a. simplified form b. radical form c. exponential form d. rational form 2. Which of the following is a radical expression? a. 5 b. -5 c. x d. V5 3. Numbers such as 4, 9, and 25 whose square roots are integers are called a. perfect cube b. perfect square c. nth root d. roots 4. Numbers such as 8, 27, and 125 whose cube roots are integers are called a. perfect cube b. perfect square c. nth root d. roots 5. It is the process of eliminating the radical expression in the denominator. c. rationalization d. simplifying radicals 6. It is the reverse process of raising a number to the second power. c. extracting the roots d. squaring a number a. factorization b. extracting the roots a. rationalization b. simplifying 7. Which of the following is a square root of 196? с. 96 d. 98 8. Between what two consecutive whole numbers does v31 lie? c. 5 and 6 d. 7 and 8 а. 14 b. 24 a. 4 and 5 b. 6 and 7 9. Find the square root of 64. a. 9 b. 32 3 GRADE 9 Learning Module for Junior High School Mathematics c. 8 d. 4096 10.The simplest form of 40x®y9z10is a. 2x?y z³V5x²z b. 3x²y*z*V5x*z c. 2xyz 5xyz d. 3xyz 5xyz 121 11.Simplify 49 11 11 a. b. d. 12.Simplify the expression 28x yz 7xy2 a. 4vxz b. 2xyz 13.Rationalize the denominator c. 2vxz d. 4xyz 2x c. ? a. с. d. 2x b. 4 14. Simplify VVx2 a. VI b. x* c. xVx d. V