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Which linear expression is a factor of the polynomial function f(x) = x3 + 2x2 − x − 2? x − 2 x + 2 x + 3 x − 3

1 Answer

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f(-2) = -2^3 + 2(-2)^2 - - 2 - 2 = -8 + 8 + 2 - 2 = 0
So by the factor theorem:-
x + 2 is a factor
User RichH
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