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anonymous

  • one year ago

(4 + 2i) − (1 − 7i)

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  1. anonymous
    • one year ago
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    (4 + (2 * i)) - (1 - (7 * i)) = 3 + 9 i

  2. anonymous
    • one year ago
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    @boots_2000

  3. anonymous
    • one year ago
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    F: 5 O:-3i I:1i L:-5i is this correct

  4. Mertsj
    • one year ago
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    In your problem FOIL does not apply because it is not a product of two binomials. Notice that you are supposed to subtract the second binomial from the first. Remember that subtracting is the same as adding the opposite of the subtrahend. So:

  5. anonymous
    • one year ago
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    @ChillOut help?

  6. Mertsj
    • one year ago
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    \[4+2i-(1-7i)=4+2i-1+7i=(4-1)+(2i+7i)=3+9i\]

  7. anonymous
    • one year ago
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    okay thank you

  8. Mertsj
    • one year ago
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    yw

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spraguer (Moderator)
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