Math 2 Honors Lesson 1-2: Exponent Rules - Product and Quotient Name________________________________ Date ____________________________ Learning Goal: I can use exponent rules to simplify expressions involving products and quotients, including integer and variable bases. An exponent tells you how many times the base is multiplied by itself. Part I: The Product Rule Quick Poll: How do you write the expression 23 24 as a single base with an exponent? ___________ i. To check your response we will expand the factors and simplify. 23 24 2 2 2 2 2 2 2 Were you correct? ii. Now expand the factors and simplify, 34 37 iii. Now expand the factors and simplify, x5 x 2 Generalize the pattern you found above: x a xb x ___________ Product Rule 1. Products of Powers: In parts a – f, write the expression as a single base with an exponent, if possible. a.) 4 4 b.) x x c.) 2 2 d.) b 4 b5 e.) 45 32 f.) a5 b2 5 2 3 4 5 6 2. How is 1e and 1f different from 1a – 1d? ____________________________________________ OVER Page 2 3. Use the Product Rule to simplify the expressions, if possible. a.) 32 36 b.) y8 y c.) t3 t5 t2 d.) a 3 b5 e.) a 9 b2 a 2 f.) r r g.) ( 2)3 ( 2)7 h.) q 3 q5 i.) z 3 z 5 j.) t 3 t 7 t k.) a 9 b 2 a 2 b3 l.) 115 c 2 116 c 1 m.) x4 y 3 z5 x2 y8 z n.) 32 rs3t 5 3r 2 s5t10 Quick Poll: How do you simplify the expression 2 x 3 3x 4 ? ___________ i. To check your response we will expand the factors, use the commutative property to rearrange the factors and simplify. 2 x3 3x 4 2 x x x 3 x x x x 2 3 x x x x x x x Were you correct? ii. Now expand the factors and simplify, 3t 4 9t 3 iii. Now expand the factors and simplify, 3x 5 2 x 4. Use the Product Rule to simplify the expressions, if possible. a.) 3x 2 2 x 5 b.) 5y4 3y c.) 2t 4 3t 5 7t 3 d.) 7a 3 4b5 e.) 5a 5 2b3 7c 2 f.) 9r 2r g.) ( 2)3 x ( 2)7 x 4 h.) 6q2 3q4 i.) 3z 1 5z 3 j.) 3t 2 4t 7 3t k.) 4a 3b2 6a 7 b2 l.) 22 c3 32 c 2 Page 3 Part II: The Quotient Rule 55 as a single base with an exponent? ___________ 53 To check your response we will expand the factors and simplify. Quick Poll: How do you write the expression, i. 55 5 5 5 5 5 1 1 1 5 5 25 53 5 5 5 Were you correct? ii. Now expand the factors and simplify, t6 t2 iii. Now expand the factors and simplify, t2 t6 bx b __________ y b Generalize the pattern you found above: Quotient Rule 1. Quotients of Powers: In parts a – g, write the expression as a single base with an exponent, if possible. a.) 25 23 c.) 158 158 e.) x5 x14 b.) 89 85 d.) b7 b2 f.) x6 y5 2. Use the Quotient Rule to simplify the expressions, if possible. a.) 32 36 b.) y8 y c.) t3 t d.) a3 b5 e.) a 9 b2 a4 f.) 2r 6r g.) ( 2)3 ( 2)7 h.) 48q3 z 7 4q 7 z 3 i.) 28r 45 z 5 7z3 j.) 22 x5 y 2 36 x 3 y 5 OVER Page 4 Part III: Homework Directions: Use the rules from the investigation to simplify the following expressions. You should NOT NEED A CALCULATOR for these problems. Show all work. 1. 88 885 882 886 2. x x 3. x5 x 2 x 6 4. 5a9 2b10 3c 2 5. x5 x12 y 4 y 6. x5 x 2 x 6 7. 9r (10r ) 8. 9r 10r 9. a 1 5a3 a 1 8a3 10. (5wx 7 y 5 )(7 w3 x10 y 12 ) 11. 8 x5 x 2 3x 7 12. y y y 13. 8819 8814 14. x19 x14 15. p4 p6 16. x x 17. 19. x 2y x 2y 20. 3x15 y 2 y8 (12)3 (12)7 18. 21. 3x 2 y 2 12 x5 y 4 t t8 Solve the following equations. Show all work. 22. 2x + 8 = -5x – 10 23. 2x + 8 = -5(x – 10)