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24 September, 13:50

Factor x^2+64 using complex numbers

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Answers (1)
  1. 24 September, 14:06
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    (x + 8i) (x - 8i)

    Step-by-step explanation:

    note that

    8i * - 8i = - 64i² = 64 → i² = - 1

    Thus

    x² + 64 = (x - 8i) (x + 8i) ← difference of squares
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