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9 October, 16:42

Write (-5 + 8i) + (-5 - 8i) as a complex number in standard form.

A) 10 - 13i

B) - 10 + 13i

C) - 10 + i

D) - 10

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  1. 9 October, 18:51
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    -5 + 8i - 5 - 8i

    Standard form is a + bi.

    Combine like terms when adding or subtracting complex numbers.

    -10 is the correct answer. Letter D
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