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anonymous

  • one year ago

simplify

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  1. anonymous
    • one year ago
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    |dw:1438029178146:dw|

  2. Nnesha
    • one year ago
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    multiply denominator and number by the conjugate of 2+7i

  3. Nnesha
    • one year ago
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    what is the conjugate of 2+7i ? do you know ?

  4. anonymous
    • one year ago
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    2-7i

  5. Nnesha
    • one year ago
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    yep right so multiply \[\huge\rm \frac{ 2 }{ 2+7i } \times \frac{ 2-7i }{ 2-7i }\] multiply numerator by numerator and denominator by denominator

  6. anonymous
    • one year ago
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    is the answer ???|dw:1438033232517:dw|

  7. Nnesha
    • one year ago
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    how did you get 8 at the numerator ?

  8. Nnesha
    • one year ago
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    \[\huge\rm \frac{ 2 }{ 2+7i } \times \frac{ 2-7i }{ 2-7i }\] \[\frac{ 2(2-7i) }{ (2+7i)(2-7i) }\] distribute parentheses by 2

  9. anonymous
    • one year ago
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    |dw:1438034776416:dw|

  10. anonymous
    • one year ago
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    is that it???

  11. Nnesha
    • one year ago
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    how did you get that ?

  12. Nnesha
    • one year ago
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    please try to solve it i know those are the options ...... so better to solve than guessing

  13. Nnesha
    • one year ago
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    :=)

  14. anonymous
    • one year ago
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    thats the only answer that has 4 in it

  15. Nnesha
    • one year ago
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    post all of them

  16. anonymous
    • one year ago
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    |dw:1438035370710:dw|

  17. anonymous
    • one year ago
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    |dw:1438035413441:dw|

  18. anonymous
    • one year ago
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    thats all four

  19. Nnesha
    • one year ago
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    oh true nvm

  20. Nnesha
    • one year ago
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    my mistake i typed 2 instead 4 sorry about that

  21. anonymous
    • one year ago
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    im confused

  22. Nnesha
    • one year ago
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    so first time you got it right

  23. Nnesha
    • one year ago
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    well there is 4 in the original question i typed 2 and u didn't correct me ..

  24. Nnesha
    • one year ago
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    my mistake..

  25. anonymous
    • one year ago
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    so the answer is 8-28i over 53?

  26. Nnesha
    • one year ago
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    yep

  27. anonymous
    • one year ago
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    okay thanks

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