29-02-2020
Mathematics

contestada

factor x^2+64 using complex numbers

Respuesta :

jimrgrant1 jimrgrant1

29-02-2020

Answer:

(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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