MPM 1D Unit 4 (Chapter 3): Polynomials Name: ________________________ Date: ____________________ Part A: True or False Identify whether each statement is true or false. 1. For any integer a, (-a) 2 = -a2 _____ 2. (3x4)3 = 27x12 _____ 3. (-2a2)3 = - 8a6 _____ 4. (3 + 4 - 5)2 = 32 + 42 + 52 _____ 5. There are five different sets of like terms in the following list of terms. 3x2y, -2, 0.5y, -2x2y, 3x2, 32, y, x/2, 0, 3y, x2y Part B: Multiple Choice Choose the correct answer for each question. 6. 7. _____ 8. 10. 9. 11. 12. Which is the simplified form of g x g4 x g3 ? a) g7 b) g8 c) g12 d) g13 1 13. What is the value of 2 2 _____ 1 4 a) 1 8 b) c) 1 2 d) 2 14. The expressions in which pair are equal? a) 5m2 and (5m)2 b) 2(c7)3 and 8c21 c) (yz)4 and y4z4 d) -3a2 and (-3a)2 15. Which expression can NOT be simplified? a) 2x 9x c) a _____ a 5 _____ _____ b) 5n 2 7 n d) 3 p 2 14 p 2 16. 2 x 2 3k is a _____ a) monomial b) binomial c) trinomial d) term 17. What is the degree of 2 x 3 y _____ a) 1 b) 2 c) 3 d) 4 Part C: Short Answer Simplify 26. (5n 2 n 8) (2n 2 7n 2) 27. ( x 2 x 3) ( x 2 2 x 7) 28. (8 x 5 y 2 )(3x 2 y 6 ) 29. (2 x 4 y ) 3 30. 2 y ( y 7) 4 y (2 y 4) 31. 2 x( x 3) 3x( x 4) 6 xy 2 32. a) 2y b) 2 x y 2 x 2 3 2 2 4 x y 9 x y c) 2 2 3xy2 2 Part E: Problem Solving/Application Be sure to show all of your work! 33. Write a simplified expression for the perimeter of this figure. 34. Three authors team up to write a children’s book. The publisher pays them according to the following contracts. Author Fixed Rate($) Royalty ($ for n books sold) Michelle 3000 - Aundrea 1500 2n Eric 1000 3n a) Find a simplified expression that represents the total that the publisher must pay the writing team. b) Determine the total payout if the book sells 200 copies. 35. Josh, Cody, and Brandon are discussing the number of songs they have downloaded on their IPods. They find that the following statements are true: Josh has 7 less than three times the number of songs as Cody Brandon has twice as many songs as Josh. Using x to represent the number of songs that Cody has, write an expression for the total number of songs the three friends have. Show your work and simplify your answer, your answer may only have one variable in it (x). Category Knowledge/ Understanding Level 4 Demonstrates a solid and thorough understanding of: -recognizing polynomial terminology and identifying key feature of polynomials Level 3 Demonstrates good understanding of: -recognizing polynomial terminology and identifying key feature of polynomials Level 2 Level 1 Below Level 1 Demonstrates moderate understanding of: Demonstrates a limited or inaccurate understanding of : Need to demonstrate an understanding of : -recognizing polynomial terminology and identifying key feature of polynomials -recognizing polynomial terminology and identifying key feature of polynomials -recognizing polynomial terminology and identifying key feature of polynomials -collect like terms -collect like terms -collect like terms -add/subtract polynomials -add/subtract polynomials -add/subtract polynomials -multiply/divide polynomials -multiply/divide polynomials -multiply/divide polynomials -collect like terms -collect like terms -add/subtract polynomials -add/subtract polynomials -multiply/divide polynomials -multiply/divide polynomials with little error Thinking Communication Application Demonstrates thorough critical thinking flow when simplifying polynomials Demonstrates good critical thinking flow when simplifying polynomials Demonstrates moderate critical thinking flow when simplifying polynomials, develops a limited and/or incorrect solution Demonstrates some critical thinking flow when simplifying polynomials but does not arrive at an answer Needs to demonstrate a strategy that could be used to come up with a solution. solutions are well formed, with completeness, accuracy and full proper mathematical form solutions are complete but some proper form is missing solutions are somewhat complete, but disorganized solutions are incomplete, scattered and disorganized Need to communicate your thinking Confidently and accurately applies the knowledge of polynomials to simplify problems. Confidently applies the knowledge of polynomials to simplify problems. Somewhat applies the knowledge of polynomials to simplify problems. Applies little knowledge of polynomials to simplify problems. Need to apply some knowledge of polynomials to simplify problems.