1 2x y 3x 4y 2 5x2 3x 4 3x2 x 1 3 5a2

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Unformatted text preview: + 6] 4 3 2 [answer: 5x − 30x + 45] 2 PRE-CALCULUS 11 Unit 1 − Day 1: Polynomial Review Exercises Simplify. 1. (2x + y) + (3x − 4y) 2. (5x2 − 3x + 4) + (3x2 − x − 1) 3. (5a2 − a − 2) − (4a2 + 5a + 6) 4. (2m2 + 2mn − n2) − (m2 − mn − 2n2) Multiply. 5. (3xy2)(−4x3y2) 6. (−4rs3t2)(−6rst4) Simplify. 23 7. 20a b3 c −5ab c −36m3n 4 p 2 8. 3 −9m np Expand and simplify. 9. 3(x − 4) + 5(x + 6) 11. 2t(3t − 4) + t(2t + 5) 10. 6(a + 3) − 2(a − 5) 12. 3y(y2 − y − 1) − y(2y2 − 3y + 4) 13. a) Write a 2-digit number in which the units digit is larger than the tens digit. Subtract the tens digit from the units digit and multiply the result by 9. Add the product to the original number. How does the resulting number compare to the original number? b) Let the original number be 10t + u and repeat the process. How does the result explain what happened in part a) ? Find the product. 14. (x − 2)(x + 4) 15. (a + 5)(a − 6) 16. (2y − 3)(3y + 4) 17. (3x + y)(x − 4y) Expand and simplify. 18. (y + 4)(y − 3) + (y − 2)(y − 3) 19. (2x − 1)(x −...
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This document was uploaded on 02/16/2014 for the course MATH Pre-Calcul at Holy Cross Regional High School.

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