QUIZ 7: Simplifying radical expressions

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MQ5 QUEST 7A   (answers below)                                                                    Mr. Gary Jaye 


INSTRUCTIONS: 1. Express all answers in simplest form and SHOW ALL WORK.
                                2. When solving, solve over the set of real numbers.

In 1 to 4, solve over the set of real numbers. [2 each]

1.  
 
3.  
 
2.  
 
4. x2 + 7 = 0 
 

5. DO NOT SIMPLIFY. Just write an equivalent expression without negative exponents:                       [3]

In 6 to 11, simplify the expression.                                     [4 each]

6.  7.  
 
8.  9.  

 

10.   11. 
12. Combine and express   in simplest form.      [5] 
 
13. Simplify                [4] 
 

14. Solve, graph, and express solution as a set: 2x - 7 - 6 < 9              [6]
 
 


ANSWERS: 1.     2.     3. {-13}    4.     5. 1/(1/x2 +y3)4    6. 7x2y(55)    7. 7x3 [3(6y2)]    8. (21)/7
9. 39    10. 7(x4)/x    11. (5 - 23)/13    12. (103 + 12 5)/15    13. 15 - (26) + 5 (13) - 13 2
14. {x: -4 < x < 11}

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