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159E1-F2011

# 159E1-F2011 - MA 15900 1 Factor the polynomial completely...

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MA 15900 EXAM 1 FALL 2011 1 1. Factor the polynomial completely. 4 x 8 28 x 5 32 x 2 1) 4 x 2 ( x 2)( x 2 + 2 x + 4)( x + 1)( x 2 x + 1) 2) ( x 2)( x 2 + 2 x + 4)( x + x 2 x + 3) 4 x 2 ( x + 2)( x 2 2 x + 4)( x x 2 + x + 4) ( x + 2)( x 2 2 x + 4)( x x 2 + x + 5) 4 x 2 ( x 2)( x + 6) ( x 2)( x + 7) 4 x 2 ( x + 2)( x 8) ( x + 2)( x 9) None of the above 2. Simplify the expression, and rationalize the denominator when appropriate. 2 x 4 y 4 27 x 1) xy 2 x 9 2) y 2 x 27 3) 2 xy 2 x 3 4) xy y 3 5) xy xy 9 6) xy xy 3 7) y xy 9 x 8) xy x 27 9) y y 3 x

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MA 15900 EXAM 1 FALL 2011 2 3. Express the number in the form a b , where a and b are integers. 2 3 ( ) 2 2 1 5 0 + 2 3 1) 5 3 2) 17 3 3) 19 6 4) 20 3 5) 25 6 6) 77 9 7) 109 18 8) 127 18 9) None of the above 4. Express as a polynomial. ( x + 3)( x 3 2)( x 2 + 4) 1) x 6 24 2) x 8 24 3) 4 x 5 8 x 24 4) x 6 + 3 x 5 8 x 24 5) x 6 + 4 x 4 6 x 2 24 6) x 8 + 4 x 4 6 x 2 24 7) x 6 + 3 x 5 + 4 x 4 + 10 x 3 6 x 2 8 x 24 8) x 7 + 3 x 6 + 4 x 4 + 10 x 3 6 x 2 8 x 24 9) None of the above 5. Solve the equation. x (3 x + 10) = 77 1) x = 7 3 ,11 2) x = 7 3 , 11 3) x = 10 3 ,0 4) x = 10 3 5) x = 11 3 ,7 6) x = 11 3 , 7 7) x = 67 3 ,77 8) x = 67 3 , 77 9) None of the above
MA 15900 EXAM 1 FALL 2011 3 6. How much of a 15% acid solution should be added to an 80% acid solution to obtain 180 milliliters of

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159E1-F2011 - MA 15900 1 Factor the polynomial completely...

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