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anonymous

  • one year ago

What are the roots of 2x+6=−5x? 3−+i2 −3−+i2 −3−+2i4 3−+i2‾‾√4 please help

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  1. anonymous
    • one year ago
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    @Nnesha

  2. anonymous
    • one year ago
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    @t.ashleyxx

  3. anonymous
    • one year ago
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    @ganeshie8

  4. anonymous
    • one year ago
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    @dom4958

  5. mathstudent55
    • one year ago
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    Shouldn't one of the x's be squared?

  6. anonymous
    • one year ago
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    ill attach a screenshot it doesn't post right

  7. anonymous
    • one year ago
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  8. anonymous
    • one year ago
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    @mathstudent55

  9. mathstudent55
    • one year ago
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    That's a completely different problem.

  10. anonymous
    • one year ago
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    can you help?

  11. mathstudent55
    • one year ago
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    With the screenshot?

  12. anonymous
    • one year ago
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    yes

  13. mathstudent55
    • one year ago
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    We need to multiply this together. \((1 + i\sqrt 3)(1 + 2i\sqrt 3) \) We use FOIL. \(=1 + 2i\sqrt 3 + i \sqrt 3 + 2i^2 (\sqrt 3)^2\) Ok so far?

  14. mathstudent55
    • one year ago
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    \(=1 + 3i\sqrt 3 - 6\) \(=-5 + 3i\sqrt 3 \)

  15. anonymous
    • one year ago
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    okay

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