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santw

  • one year ago

Solve sqrt-99(sqrt-7 minus sqrt -13)

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  1. LogicalApple
    • one year ago
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    \[\sqrt{-99}(\sqrt{-7} - \sqrt{-13})\] ?

  2. santw
    • one year ago
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    yes. @LogicalApple in terms of i. sorry.

  3. santw
    • one year ago
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    i was on my phone posting.

  4. santw
    • one year ago
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    wait, no @logicalapple \[\sqrt{-99}*(\sqrt{-7}-\sqrt{13})\]

  5. LogicalApple
    • one year ago
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    Oh I see. Try rewriting sqrt(-99) as i sqrt(99) and sqrt(-7) as i sqrt(7) Then distribute i sqrt(99): \[i \sqrt{99} (i \sqrt{7} - \sqrt{13} )\]

  6. santw
    • one year ago
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    \[3\sqrt{11}*(\sqrt{7}i - \sqrt{13})\] @logicalapple

  7. LogicalApple
    • one year ago
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    \[3i \sqrt{11} * (i \sqrt{7} - \sqrt{13}) = 3i^{2} \sqrt{77} - 3i \sqrt{143}\]

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