यदि $\frac{x^4}{(x-1)(x-2)}=f(x)+\frac{A}{x-1}+\frac{B}{x-2}$ है,तो $f(-2)+A+B=$

  • A
    $32$
  • B
    $28$
  • C
    $22$
  • D
    $20$

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