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Spring98

  • one year ago

If x^2 = 20, what is the value of x?

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  1. anonymous
    • one year ago
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    two possible values

  2. steve816
    • one year ago
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    |dw:1442280470808:dw|

  3. steve816
    • one year ago
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    |dw:1442280500222:dw|

  4. Spring98
    • one year ago
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    A. ±10 B. ±40

  5. jim_thompson5910
    • one year ago
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    do you see how steve816 simplified the radical?

  6. Spring98
    • one year ago
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    ya

  7. Spring98
    • one year ago
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    ±10 squared ±20squared

  8. Spring98
    • one year ago
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    @satellite73

  9. zzr0ck3r
    • one year ago
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    They told you the exact numbers.

  10. Spring98
    • one year ago
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    those are the answer choices

  11. Spring98
    • one year ago
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    what exact numbers?

  12. zzr0ck3r
    • one year ago
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    \(x=\pm 2\sqrt{5}\)

  13. zzr0ck3r
    • one year ago
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    That means \(x=2\sqrt{5}\) or \(x=-2\sqrt{5}\).

  14. Spring98
    • one year ago
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    im so confused

  15. Spring98
    • one year ago
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    is C the answer?

  16. steve816
    • one year ago
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    Can you list out all the answer choices?

  17. Spring98
    • one year ago
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    i already did the first one says A and B and the one under it is C and D

  18. jim_thompson5910
    • one year ago
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    post a screenshot of the answer choices if you can

  19. Spring98
    • one year ago
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    the 6th and 7th post on this page!!!

  20. Spring98
    • one year ago
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    is the answer choices

  21. Spring98
    • one year ago
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    plz help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

  22. jim_thompson5910
    • one year ago
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    are you able to post a screenshot?

  23. Spring98
    • one year ago
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    i can't do that

  24. jim_thompson5910
    • one year ago
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    so the problem is on a piece of paper?

  25. Spring98
    • one year ago
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    ±10squared ±20squared ±10 ±40

  26. Spring98
    • one year ago
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    is it C?

  27. jim_thompson5910
    • one year ago
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    so choice A is this? \[\Large \pm 10^2\]

  28. Spring98
    • one year ago
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    i ment square root

  29. jim_thompson5910
    • one year ago
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    oh so choice A is this? \[\Large \pm\sqrt{10}\]

  30. Spring98
    • one year ago
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    yup and so is B but it's 20

  31. jim_thompson5910
    • one year ago
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    Look at the first post steve816 wrote

  32. jim_thompson5910
    • one year ago
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    steve816 practically gives the answer

  33. Spring98
    • one year ago
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    oh so it is choice B right?

  34. jim_thompson5910
    • one year ago
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    yeah \(\Large \pm \sqrt{20}\)

  35. Spring98
    • one year ago
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    thanks!

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