If a polynomial function f(x) has roots –9 and 7 – i, what must be a factor of f(x)?
Asked by maham237 @ in Mathematics viewed by 328 People
Answered by maham237 @
F(x) has roots -9, and 7 - i.
Therefore x = -9, x = 7 -i
x + 9 = 0 x - 7 + i = 0
(x + 9) must be a factor. (x + i - 7) must also be a factor.
Therefore (x + 9) and (x + i - 7) must be factors.
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