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A polynomial P is given. P(x) = x4 − 16 (a) Find all zeros of P,...

A polynomial P is given.

P(x) = x4 − 16

(a) Find all zeros of P, real and complex. (Enter your answers as a comma-separated list. Enter all answers including repetitions.)

x =   


(b) Factor P completely.

P(x) =
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