153E1-F2009 - MA 15300 Exam 1A Fall 2009 1. If x > 0 and...

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MA 15300 Exam 1A Fall 2009 1 1. If 0 x > and 0 y < , which of the following would produce a positive result? . II only . III only . I and III only . I, II, and III . None are positive. A B C D E 2. Simplify. Do not leave negative exponents in your answer. 27 4 9 54 8 32 x yx y xy ⎛⎞ ⎜⎟ ⎝⎠ 6 6 66 11 6 11 6 . 4 .4 . 4 . None of the above. x A y Bx y Cx y x D y E 3. Simplify. () 1 1 4 3 27 4 aa 7 12 2 7 7 12 1 12 2 7 .3 6 6 .1 2 .6 2 Aa B a Ca Da Ea 2 2 I. II. III. x y xy x y y x x
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MA 15300 Exam 1A Fall 2009 2 4. Simplify. ( ) ( ) 53 65 83 x yx y ( ) () 54 15 7 15 7 .2 6 .1 2 2 6 3 . Cannot be determined Ax y x Bx y y Cx Dx y y E 5. Rationalize the denominator and simplify. 3 3 x x + 9 . 9 69 . 9 39 . 9 3 . 3 . 3 x A x xx B x C x x D x E x + −+ + 6. Perform the indicated operations and express as a polynomial. 2 43 215 48 x x +− + 2 2 2 2 .3 6 1 1 .3 2 5 .3 4 1 1 .3 4 5 . None of the above. x x Cxx x E
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MA 15300 Exam 1A Fall 2009 3 7. Which of the following is a factor of 2 12 23 10 xx + ?
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153E1-F2009 - MA 15300 Exam 1A Fall 2009 1. If x &gt; 0 and...

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