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28-07-2020
Mathematics

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If a polynomial function f(x) has roots -9 and 7 -i, which must be a factor of f(x)

Respuesta :

28-07-2020

Answer:

(x + 9) (x - 7)

Step-by-step explanation:

when we put x + 9 = 0 then x = -9 as it's the root of the fuction.

same thing here: x - 7 = 0 then x = 7

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