TEST 6: Rational expressions and quadratic inequalities

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MQ5 TEST 6A  (answers below)                                                                              Mr. Gary Jaye

INSTRUCTIONS: Express all answers in simplest form and SHOW ALL WORK.

In 13 -14, solve, graph, and express solution as a set. [10 each]

13. x2 + 7x > 18
 

14. x2 - 35 < -2x  


ANSWERS: 1. {x: x ³ 5}   2. {}   3. 1/(1/x4 + 1/y3)2   4. 1/(1/an + bm)p   5. 9x12/y6    6. -4/(x - y) or 4/(y - x)
7. 2/(x - 4)    8. 3/(x - 7)    9. -b    10. reject 1, \ {-3}  11. reject 5 \ {-1}    12. 2/[(x - 2)(x - 4)]
13. {x: x < -9 OR x > 2}   14. {x: -7 < x < 5}

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