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anonymous

  • one year ago

Simplify the expression fraction with numerator of the square root of negative one and denominator of the quantity three plus eight times i minus the quantity two plus five times i. fraction with numerator x-3 plus i and denominator 10 fraction with numerator negative 3 plus i and denominator 10 fraction with numerator 3 minus i and denominator 10 fraction with numerator negative 3 minus i and denominator 10

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  1. welshfella
    • one year ago
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    |dw:1439840909067:dw|

  2. welshfella
    • one year ago
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    first simplify the denominator can you do that ?

  3. welshfella
    • one year ago
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    just add/subtract like terms

  4. anonymous
    • one year ago
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    Sure

  5. anonymous
    • one year ago
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    1+13i

  6. anonymous
    • one year ago
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    below the i

  7. welshfella
    • one year ago
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    not 13i its 1 + 3i

  8. anonymous
    • one year ago
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    typo

  9. welshfella
    • one year ago
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    |dw:1439841275066:dw|

  10. welshfella
    • one year ago
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    the next step is to rationalise the denominator

  11. anonymous
    • one year ago
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    x-3 plus i and denominator 10 negative 3 plus i and denominator 10 3 minus i and denominator 10 negative 3 minus i and denominator 10

  12. welshfella
    • one year ago
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    no you multiply numerator and denominator by the conjugate of 1 + 3i which is 1 - 3i

  13. anonymous
    • one year ago
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    are the choices

  14. anonymous
    • one year ago
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    So it's the 3rd one?

  15. welshfella
    • one year ago
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    can you simplify the following

  16. anonymous
    • one year ago
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    or 4th

  17. anonymous
    • one year ago
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    I just need the answer I get how to solve it

  18. welshfella
    • one year ago
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    |dw:1439841457230:dw|

  19. welshfella
    • one year ago
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    simplifying that will give you the answer

  20. anonymous
    • one year ago
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    So the 4th one?

  21. anonymous
    • one year ago
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    yes/no?

  22. anonymous
    • one year ago
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    I mean, you've already wasted 24 minutes of my damn time.

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