Chap7 Section6

Elementary and Intermediate Algebra: Graphs & Models (3rd Edition)

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Unformatted text preview: Section 7.6 Complex Fractions 703 Version: Fall 2007 7.6 Exercises In Exercises 1- 6 , evaluate the function at the given rational number. Then use the first or second technique for simpli- fying complex fractions explained in the narrative to simplify your answer. 1. Given f ( x ) = x + 1 2 − x , evaluate and simplify f (1 / 2). 2. Given f ( x ) = 2 − x x + 5 , evaluate and simplify f (3 / 2). 3. Given f ( x ) = 2 x + 3 4 − x , evaluate and simplify f (1 / 3). 4. Given f ( x ) = 3 − 2 x x + 5 , evaluate and simplify f (2 / 5). 5. Given f ( x ) = 5 − 2 x x + 4 , evaluate and simplify f (3 / 5). 6. Given f ( x ) = 2 x − 9 11 − x , evaluate and simplify f (4 / 3). Copyrighted material. See: http://msenux.redwoods.edu/IntAlgText/ 1 In Exercises 7- 46 , simplify the given complex rational expression. State all re- strictions. 7. 5 + 6 x 25 x − 36 x 3 8. 7 + 9 x 49 x − 81 x 3 9. 7 x − 2 − 5 x − 7 8 x − 7 + 3 x + 8 10. 9 x + 4 − 7 x − 9 9 x − 9 + 5 x − 4 11. 3 + 7 x 9 x 2 − 49 x 4 704 Chapter 7 Rational Functions Version: Fall 2007 12. 2 − 5 x 4 x 2 − 25 x 4 13. 9 x + 4 + 7 x + 9 9 x + 9 + 2 x − 8 14. 4 x − 6 + 9 x − 9 9 x − 6 + 8 x − 9 15....
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Chap7 Section6 - Section 7.6 Complex Fractions 703 Version...

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