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SeattleSunGirl

  • 4 years ago

-√-25

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  1. soxhletapparatus
    • 4 years ago
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    -5i

  2. nayeaddo
    • 4 years ago
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    \[-5i\]

  3. Owlfred
    • 4 years ago
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    Please help explain answers as well guys :) - Owlfred the Moderator

  4. nayeaddo
    • 4 years ago
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    Sure

  5. imranmeah91
    • 4 years ago
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    \[\sqrt{-25}=\sqrt{25} \sqrt{-1}\]

  6. soxhletapparatus
    • 4 years ago
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    the square root of a negative number -1 is i. since -25=25*-1,sqrt of -25=sqrt of 25*-1. square root of 25=5, square root of -1=i .5*i=5i. negate. -5i

  7. nayeaddo
    • 4 years ago
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    \[\sqrt{-25} = \sqrt{-1}\sqrt{25} = 5i\] Since you had \[-\sqrt{-25} = -5i\]

  8. Owlfred
    • 4 years ago
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    Thanks fellas.

  9. jim_thompson5910
    • 4 years ago
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    \[\large -\sqrt{-25}\] \[\large -\sqrt{-1*5^2}\] \[\large -\sqrt{-1}*\sqrt{5^2}\] \[\large -i*5\] \[\large -5i\] Note: \[\large i=\sqrt{-1}\] So \[\large -\sqrt{-25}=-5i\]

  10. nayeaddo
    • 4 years ago
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    you're welcome

  11. soxhletapparatus
    • 4 years ago
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    sure :)

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