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boomerang285 Group Title

please help me with this square root problem...

  • 2 years ago
  • 2 years ago

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  1. boomerang285 Group Title
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    \[\left( -5-\sqrt{-9} \right)^{2}\]

    • 2 years ago
  2. rvgupta Group Title
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    16+i10*9^1/2

    • 2 years ago
  3. littlepixie99 Group Title
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    well what is -5 *-5? remember negative times negative is a positive then what is rt-9^2?

    • 2 years ago
  4. boomerang285 Group Title
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    25 and 3 right?

    • 2 years ago
  5. boomerang285 Group Title
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    and rvgupta, i come up with that answer too but its not one of my multiple choice options

    • 2 years ago
  6. littlepixie99 Group Title
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    25 is correct, but if you sq rt a number and then sq it again you get the original number

    • 2 years ago
  7. littlepixie99 Group Title
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    so you've rooted it but not re-squared it

    • 2 years ago
  8. boomerang285 Group Title
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    so it is 9?

    • 2 years ago
  9. boomerang285 Group Title
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    16

    • 2 years ago
  10. littlepixie99 Group Title
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    is that an option?

    • 2 years ago
  11. boomerang285 Group Title
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    for some reason i keep coming up with 16-10i\[\sqrt{9}\]

    • 2 years ago
  12. boomerang285 Group Title
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    there is 16 + 30i

    • 2 years ago
  13. littlepixie99 Group Title
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    where did the 10i come from?

    • 2 years ago
  14. boomerang285 Group Title
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    i am not really sure... i know i worked it out wrong, and 10i isnt even an option....

    • 2 years ago
  15. boomerang285 Group Title
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    yes

    • 2 years ago
  16. littlepixie99 Group Title
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    think of it this way -5*-5 -rt9*-rt9 -5*-rt9 -5*-rt9 and add all those together

    • 2 years ago
  17. estudier Group Title
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    16+30i

    • 2 years ago
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