153E1-F2011

153E1-F2011 - MA 153 Exam 1A Fall 2011 1. Given that x 0 ,...

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MA 153 Exam 1A Fall 2011 1 1. Given that 0 x , 0 y , and z 0, which of the following values must be negative? 2 . More than one is negative x yz A z B yz xy C z x D y E 2. Simplify. Do not leave negative exponents in your answer.   3 3 4 2 3 x x    6 2 2 6 . 27 . 27 . 9 .9 . None of the above x A x B x C Dx E 3. Simplify. Do not leave negative exponents in your answer. 5 8 2 1 23 4 20 x y x y xy     4 5 4 5 4 5 4 . . 5 . 5 . 5 . 4 y A x x B y C y D x y E x
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MA 153 Exam 1A Fall 2011 2 4. Simplify the expression completely. 7 3 11 3 27 x y z       7 3 11 3 23 3 4 8 48 2 3 3 2 .9 . 3 3 A x y z x yz B C xyz x z D x z E x yz xz 5. Multiply and express as a polynomial. 4 x 3 y 2 A 16 x 2 24 xy 9 y 2 B 16 x 2 9 y 2 C 16 x 2 12 9 y 2 D 16 x 2 9 y 2 E None of the above 6. Which of the following is a factor of 2 7 10 8 xx  ?
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153E1-F2011 - MA 153 Exam 1A Fall 2011 1. Given that x 0 ,...

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