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anonymous

  • 5 years ago

express sqrt-75 in terms of i.

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  1. anonymous
    • 5 years ago
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    5i(root(3))

  2. anonymous
    • 5 years ago
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    Important to remember that a root of a negative is not expressed in the way we would with a non negative. This is one reason that (the invention of) i is so useful. Ok here we go √-75 could also be written √-(3 x 5 x 5) Which in turn could be written √-(3 x 25) or √-25 x √3 or alternatively √25 x √-3 You should use the second option because we can write √-25 as 5i and take it outside. Giving 5i √3 as your answer

  3. L
    • 5 years ago
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    first root : +i5sqrt3 second root : -i5sqrt3

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