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Unformatted text preview: MAC1105: Quiz #4 Solutions
July 2, 2010 In the top-right corner of a clean sheet of paper, write your name, UFID, and section number. Please use a pen with blue or black ink. When you are nished, FOLD your paper in half lengthwise and write your name on the back. 1. State whether the following are polynomials. For each expression that is a polynomial, state the degree. (a) (b) (c) (d)
2x - 3x2 . Polynomial, degree 2. 5x + 3 + x. Not a polynomial. 1 x2 + 2x + x . Not a polynomial. 0. Polynomial, degree 0. 2. Perform the indicated operation:
3x3 - 8x2 + 2x - 6 (b) (x3 - x2 - x + 1) (x - 1) x2 -1 x-1 x3 - x2 - x + 1 - x3 + x2 -x+1 x-1 0 (a) (3x3 -5x2 +4x-1)-(2x+3x2 +5)= 3x3 -5x2 -3x2 +4x-2x-1-5 = 3. Factor completely: 8x4 - 24x3 + 4x2 - 12x (hint: factor out the GCF rst, then factor by grouping)
4x 2x3 - 6x2 + x - 3 = 4x 2x2 (x - 3) + 1(x - 3) = 4x(2x2 + 1)(x - 3) 4. Would you rather take quizzes near the end of the rst period, or keep them towards the beginning? Results: 6 voted for the end, 7 voted for the beginning, and 5 didn't care. So quizzes will stay in the beginning of the period. 1 ...
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This note was uploaded on 06/07/2011 for the course MAC 1105 taught by Professor Picklesimer during the Summer '10 term at University of Florida.
- Summer '10