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Sinz

  • 3 years ago

Add the complex expressions, and simplify. (1 – 3.5i) + (3.6 + 6.5i)

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  1. Walleye
    • 3 years ago
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    ok distribute it out first and lets see what you get

  2. Sinz
    • 3 years ago
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    (1+3.6) - (3.5i+6.5i)

  3. Walleye
    • 3 years ago
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    nope here is how you distribute \[(a+b) * (c + d) = ac + ad + bc + bd\]

  4. Walleye
    • 3 years ago
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    does that help at all?

  5. Sinz
    • 3 years ago
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    yes I am sorry I am helping others and keeping up with my own

  6. Sinz
    • 3 years ago
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    1-3.5i + 3.6 + 6.5i = 1+3.6 *1+6.5i= 3.7 + 6.6i = 3.5i+3.6 * 3.5i+6.5i= 7.1i + 10i = 17i does that look right

  7. Sinz
    • 3 years ago
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    or is it confusing?

  8. Walleye
    • 3 years ago
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    I will tell you the answer is 4.6 + 3i

  9. Sinz
    • 3 years ago
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    okay

  10. Walleye
    • 3 years ago
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    lets double check your FOIL

  11. Sinz
    • 3 years ago
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    thank you was it that confusing?

  12. Tyler1992
    • 3 years ago
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    All you do is add the real parts and then add the imaginary parts.. There shouldnt be any distributing

  13. Walleye
    • 3 years ago
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    You FOIL is very confusing haha.

  14. Sinz
    • 3 years ago
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    works lets double check

  15. Walleye
    • 3 years ago
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    Im really really sorry!!!!! I thought it was (1 – 3.5i) (3.6 + 6.5i) and not (1 – 3.5i) + (3.6 + 6.5i)

  16. Walleye
    • 3 years ago
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    tyler is right!

  17. Tyler1992
    • 3 years ago
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    \[(1 + 3.6) + (-3.5 + 6.5)i\]\[4.6 + 3i\]

  18. Sinz
    • 3 years ago
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    okay thank you tyler

  19. Sinz
    • 3 years ago
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    and you too Walleye

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