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anonymous

  • 5 years ago

how do I simplify (3+5i)^4?

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  1. anonymous
    • 5 years ago
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    just expand , you could get it into mod arg form and use demoivres theorm but that wont give exact answer

  2. anonymous
    • 5 years ago
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    ie do (3+5i)^2 (3+5i)^2 and expand, or use binomial theorm/pascals triangle expansion coeffiecents

  3. anonymous
    • 5 years ago
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    (3+5i)^2 (3+5i)^2 = -16+30i

  4. anonymous
    • 5 years ago
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    I got that answer...does that mean I do it twice?

  5. radar
    • 5 years ago
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    My guess is to expand taking (3+5i)(3+5i)=-16+30i then take (-16+30i)(-16+30) = -644-960i

  6. anonymous
    • 5 years ago
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    okay...that is what I was starting to do.

  7. radar
    • 5 years ago
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    Did you come up with the same results? I must admit the outcome does not look any simpler!!

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spraguer (Moderator)
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