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anonymous

  • 4 years ago

simplify (squareroot of -4) times (squareroot of -9)

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  1. anonymous
    • 4 years ago
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    |dw:1327733590778:dw|

  2. anonymous
    • 4 years ago
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    6 to explain:

  3. anonymous
    • 4 years ago
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    |dw:1327733624424:dw|

  4. anonymous
    • 4 years ago
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    there's two ways to do this: 1. multiply the values inside the roots. this becomes sqrt36 which is 6. You can also

  5. anonymous
    • 4 years ago
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    Which is 6.

  6. anonymous
    • 4 years ago
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    write sqrt(-4) as 2i and sqrt(-9) as 2i and 3i respectively. Especially because you're working on complex numbers, you might want to show your work this way.\[\sqrt{-4}\times \sqrt{-9}=2i \times 3i = 6i^2=....-6 \]

  7. anonymous
    • 4 years ago
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    So there can be two answers for this?

  8. anonymous
    • 4 years ago
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    6 or -6?

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spraguer (Moderator)
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