19cristiangar
19cristiangar 19cristiangar
  • 22-05-2018
  • Mathematics
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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

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Аноним Аноним
  • 22-05-2018
f(-2) = -2^3 + 2(-2)^2  - - 2 - 2 =  -8  + 8 + 2 - 2 =  0
So by the factor theorem:-
 x + 2 is a factor   
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