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153E1-F2009

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

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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. 2 7 4 9 5 4 8 32 x y x y x y ⎞⎛ ⎟⎜ ⎠⎝ 6 6 6 6 11 6 11 6 . 4 . 4 . 4 . 4 . None of the above. x A y B x y C x y x D y E 3. Simplify. ( ) 1 1 4 3 27 4 a a 7 12 2 7 7 12 1 12 2 7 . 36 . 36 . 12 . 6 . 12 A a B a C a D a E a 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. ( ) ( ) 5 3 6 5 8 3 x y x y ( ) ( ) ( ) ( ) 5 4 15 7 5 4 15 7 . 2 6 . 12 . 12 6 . 2 3 . Cannot be determined A x y x B x y y C x y x D x y y E 5. Rationalize the denominator and simplify. 3 3 x x + 9 . 9 6 9 . 9 3 9 . 9 3 . 3 6 9 . 3 x A x x x B x x x C x x D x x x E x + + + + + 6. Perform the indicated operations and express as a polynomial. ( )( ) ( ) 2 4 3 2 1 5 4 8 x x x x + + 2 2 2 2 . 3 6 11 . 3 2 5 . 3 4 11 . 3 4 5 . None of the above.
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153E1-F2009 - MA 15300 Exam 1A Fall 2009 1 If x > 0 and y <...

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