Simplifying Complex Numbers

Discussion in 'Other Pre-University Math' started by nycmathguy, Sep 15, 2021.

  1. nycmathguy

    nycmathguy

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    Section 2.4
    78 & 80

    Question 78

    4i^2 - 2i^3

    4(-1) - 2(i^2)(i)

    -4 - 2(-1)(i)

    -4 + 2i

    Question 80

    (-i)^3

    i^3

    i^2 • i

    Note: i^2 = -1

    Answer: - i

    You say?




    20210915_020215.jpg
     
    nycmathguy, Sep 15, 2021
    #1
    MathLover1 likes this.
  2. nycmathguy

    MathLover1

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    perfect
     
    MathLover1, Sep 15, 2021
    #2
    nycmathguy likes this.
  3. nycmathguy

    nycmathguy

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    So far our precalculus journey is nearly perfect. I just hope you will stay the course and complete the race.
     
    nycmathguy, Sep 16, 2021
    #3
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