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21 November, 17:29

Simplify - 3+i/7 + i

First, multiply both the numerator and

denominator by___.

A. - 3 + i

B. - 3 - i

C. 7 + i

D. 7 - 1

+4
Answers (2)
  1. 21 November, 19:36
    0
    C. 7 + i

    Step-by-step explanation:

    (-3+i) / (7 + i) =

    (-3+i) (7-i) / (7+i) (7-i) =

    (-21+10i+1) / 50=

    (10i-20) / 50=

    0.2i-0.4
  2. 21 November, 20:23
    0
    The answer is C. 7+i
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