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153E1-S2011

# 153E1-S2011 - MA 15300 Exam 1A Spring 2011 1 Given that x >...

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MA 15300 Exam 1A Spring 2011 1. Given that and , which of the following expressions must be negative? 0 x > 0 y < 2 2 2 . . . . . More than one is negative. Ax y Bxy x C y Dx y E 2. Simplify. Do not leave negative exponents in your answer. 3 43 27 12 3 xy ⎛⎞ ⎝⎠ 97 18 12 18 12 . 64 . 64 64 64 . . None of the above. A B C D E 3. Simplify. Do not leave negative exponents in your answer. 1 1 2 5 2 3 ab ⎜⎟ 2 5 2 5 5 2 1 5 6 3 5 2 6 5 5 2 .3 Aa b B Ca b Da b Ea b 1

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MA 15300 Exam 1A Spring 2011 4. Rationalize the denominator and simplify. 3 1 5 xy 3 26 2 2 1 . 5 5 . 5 1 . 25 5 . 5 5 . 5 A xy B y C x y xy D xy x E y 5. Perform the indicated operations and express as a polynomial. () 2 2 57 92 1 xx x +− + 2 2 2 2 .3 1 0 .7 1 0 .1 1 8 8 . None of the above. Ax x Bx x Cx x Dx x E 6. Which of the following is a factor of 62 81 x x ? 2 2 2 2 .9 Ex + + 2
MA 15300 Exam 1A Spring 2011 7. Factor completely. Given: ( )( ) 33 2 2 x yx y x x y y +=+ −+ . 12 3 64 x y + ( ) () ( ) ( ( 3 4 42 4 48 4 .4 .8 8 4 1 6 4 1 6 . Cannot be factored.

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153E1-S2011 - MA 15300 Exam 1A Spring 2011 1 Given that x >...

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