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17 April, 06:13

What is the sum of 12 - 5i and - 3 + 4i? a.) - 16 + 63i b.) 9 - i c.) 9 - 9i d.) 15 - 9i

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  1. 17 April, 06:31
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    Just add the real and imaginary parts:

    12-3 = 9

    -5i+4i = - i

    So the answer is 9-i, answer b.
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