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. Æ    2. Æ    3. {-13}    4. Æ    5. 1/(1/x² +y³)⁴    6. 7x²yÖ(55)    7. 7x³ [³Ö(6y²)]    8. Ö(21)/7
9. ³Ö9    10. ⁷Ö(x⁴)/x    11. (5 - 2Ö3)/13    12. (10Ö3 + 12 Ö5)/15    13. 15 - Ö(26) + 5 Ö(13) - 13 Ö2
14. {x: -4 < x < 11}

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