problem_1 - shin (ys5232) – Homework 1 (Quest) – miner...

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Unformatted text preview: shin (ys5232) – Homework 1 (Quest) – miner – (55096) 1 This print-out should have 20 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points Rationalize the numerator of √ x + 5 − √ x − 2 x . 1. 3 x √ x + 5 + √ x − 2 2. 7 x √ x + 5 − √ x − 2 3. 3 x ( √ x + 5 + √ x − 2) 4. 7 x ( √ x + 5 + √ x − 2) 5. 7 x ( √ x + 5 − √ x − 2) 002 10.0 points Simplify the expression parenleftBig xy- 2 √ z parenrightBig 6 ÷ parenleftBig y 2 x 1 / 3 z- 2 parenrightBig 12 as much as possible, leaving no negative ex- ponents and no radicals. 1. x 10 z 27 y 36 2. x 2 y 12 z 21 3. x 10 y 36 z 27 4. x 10 y 12 z 21 5. x 10 y 36 z 27 003 10.0 points Simplify the rational expression 8 x 10 x + 20 − 80 10 x 2 + 20 x + 4 x as much as possible. 1. 4 5 x ( x + 4) 2. 8 5 x parenleftBig x + 5 x + 2 parenrightBig 3. 8 5 x parenleftBig 2 x + 5 x + 4 parenrightBig 4. 4 5 parenleftBig x + 5 x + 2 parenrightBig 5. 4 5 parenleftBig x + 2 x + 5 parenrightBig 004 10.0 points Write the expression ( x + 4) 1 / 9 − 1 3 x ( x + 4)- 8 / 9 as a single fraction containing only positive exponents. 1. 3 x + 12 ( x + 4) 8 / 9 2. 2 x + 3 ( x + 4) 9 / 8 3. 3 x + 12 ( x + 4) 9 / 8 4. 2 x + 3 3( x + 4) 8 / 9 5. 2 x + 12 3( x + 4) 9 / 8 6. 2 x + 12 3( x + 4) 8 / 9 005 10.0 points Simplify the expression f ( x ) = 4 + 16 x − 3 1 − 8 parenleftBig x x 2 − 9 parenrightBig shin (ys5232) – Homework 1 (Quest) – miner – (55096) 2 as much as possible....
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This note was uploaded on 10/06/2010 for the course M 480N taught by Professor Guntel,miner during the Fall '10 term at University of Texas.

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problem_1 - shin (ys5232) – Homework 1 (Quest) – miner...

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