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​​Let $a$ be the root of the polynomial $f(x)$ of multiplicity 1. Then $a$ is a root of polynomial $((x-a) / 2) (f’(x) + f’(a)) – f(x) +f(a)$ of multiplicity

  1. exactly 4
  2. at least 4
  3. at most 2
  4. exactly 1
in Numerical Ability by (151 points)
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D. Exactly one?

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