$|x| < 1$ માટે,$\frac{2}{(1-x)(2-x)}$ ના અનંત શ્રેણી વિસ્તરણમાં $x^{3}$ નો સહગુણક શું છે?

  • A
    $-\frac{1}{16}$
  • B
    $\frac{15}{8}$
  • C
    $-\frac{1}{8}$
  • D
    $\frac{15}{16}$

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