6t3 t2 3t 1 23 x2 8x 16 24 y2 16 25 a2 10a

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Unformatted text preview: 18 10. 4a + 28 11. 8t2 − 3t 12. y3 − 7y 13. a) The digits are reversed. b) (10t + u) + 9(u − t) = 10u + t) 14. x2 + 2x − 8 15. a2 − a − 30 16. 6y2 − y − 12 17. 3x2 − 11xy − 4y2 18. 2y2 − 4y − 6 19. −7x2 − 12x + 6 20. 8a2 + 12a + 19 21. x3 − 6x2 + 7x + 6 22. 6t3 + t2 − 3t − 1 23. x2 + 8x + 16 24. y2 − 16 25. a2 − 10a + 25 26. 9t2 − 1 27. 4x2 − 12xy + 9y2 28. 25a2 − 9b2 29. 18m2 + 12m + 2 30. 1 −6x + 12x2 − 8x3 31. 2m2 − 8m + 7 32. −12x + 61 33. 10t2 + 12t + 1 34. −9x2 + 18xy − 11y2 35. a) The average of (x + 1) and (x − 1) is x; the square of the average minus 1 is x2 − 1 which is also the product of (x + 1) and (x − 1) b) Square their average and subtract 9. c) (x + 3)(x − 3) = x2 − 9 PRE-CALCULUS 11 Unit 1 – Day 2: FUNCTIONS REVIEW and QUADRATIC FUNCTIONS FUNCTIONS A relation describes the relationship between the two quantities, x and y. The independent variable, x, and the dependent variable, y, form ordered pairs, (x,y). A relation is a s...
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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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