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Question
Ö = square root


17. Find the real roots of the equation:
    y^2 - 7 = 0

a.) y = ± 3.5         b.) ± Ö 7

c.) y = 0             d.) Ö 7



18. Simplify:  Ö 5/2 + Ö 2/5  

a.) 1          b.) 7

c.) -1         d.) 7Ö 10 / 10



19. Simplify: Ö 3( Ö 12 - Ö 24  )

a.) 6         b.) 6 - 6Ö 2

c.) Ö 2       d.) -6Ö 2




20. Simplify: 3Ö 5 ( Ö 5 + 2 Ö 75 )

a.) 15Ö 5             b.) 120

c.) 15 + 30Ö 15       d.) 30Ö 15




21. Simplify: 2Ö (144 · 7x)

a.) 2xÖ12        b.) 24Ö7x

c.) 36Ö112x      d.) 24Ö14x



22. Ö40 - 2Ö 5 / Ö10
  
a.) 2 - Ö2        b.) 2Ö 7


c.) Ö 20 - 2      d.) Ö 2 - 2




23. Simplify:  1 / 6 + Ö 3

a.) 2 / 11      b.) 6 - Ö 3 / 33

c.) Ö 3 / 9     d.) 1 / 9




24. Simplify: (5 - Ö 2 )(3 - 2Ö 2 )

a.) 19 - 13Ö 2       b.) 19 - 7Ö 2


c.) 11 - 13Ö 2       d.) 29 - 13Ö 2




25. Simplify: Ö6 / Ö2 + Ö3
 
a.) 1                  b.) (2 Ö 3 - 3Ö 2 )

c.)(6 Ö 2 - Ö 3 )      d.) (3 Ö 2 - 2Ö 3 )

 


26. Simplify: 2Ö 7 + 12Ö 7 - 1

a.) 13             b.) 9

c.) 14 Ö 7 - 1     d.) 14Ö 7



27. Simplify: 3 Ö 2w-5 = 1

a.) w = 7      b.) w = 16

c.) w = 3      d.) w = -5



28. Solve: 5 +Ö (a + 7)= a

a.) a = -9       b.) a = 2

c.) a = 9        d.) a = -2



29. Solve: Ö 3a - 2 - Ö 2a - 3 = 1

a.) a = 4 or a = 3      b.) a = -2 or a = -6

c.) a = 2 or a = 6      d.) a = -4 or a = -3



30. Solve: Ö (n + 6) - Ö n = Ö 6

a.) n = 3           b.) n = 0

c.) No solution     d.) n = -1  

Answer
When typing you write square roots as x^1/2.
17. b
18. 7(1/10)^1/2, not c
19. b
20. c
21. b
22. 2(10)^1/2 -2^1/2
23. You should have written it 1/(6+3^1/2), b
24. a
25. d
26. c
27. Do you mean 3(2w)^1/2 -5 = 1 or 3(2w-5)^1/2 = 1.  Either way, none of those answers are correct
28. c
29. c
30. b

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