Quiz2solutions - MAC1105 Quiz#2 In the top-right corner of...

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Unformatted text preview: MAC1105: Quiz #2 June 29, 2010 In the top-right corner of a clean sheet of paper, write your name, UFID, and section number. Please use a pen with blue or black ink. When you are nished, FOLD your paper in half lengthwise and write your name on the back. 1. State whether the following claims about the order of operations are true or false: (a) Multiplication is always performed before division. False! Multipli- cation and division are performed together, left to right. (b) Absolute value bars are evaluated before exponential expressions. True! Absolute value bars count as a type of Parentheses, so they are evaluated before exponents. 2. Evaluate: |3 - 5| - 2 2 (-3 + 4) |3 - 5| - 2 | - 2| - 2 2-2 = = =0 2 (-3 + 4) 2 (1) 2 4x4 (x-2 y 3 )2 4x4 (x-2 y 3 )2 = 4x4 (x-2 )2 (y 3 )2 = 4x4 (x-4 )(y 6 ) = 4x4-4 y 6 = 4x0 y 6 = 4x6 3 3 3. Simplify: 4. Simplify: 27x7 z 3 3 x3 x3 x = 3 x x 3 x z = 3x2 z 3 x 27 27 3 x7 3 z3 = 3 3 3 z3 27x7 z 3 = 1 ...
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