यदि $\frac{9}{(x - 1)(x + 2)^2} = \frac{A}{x - 1} + \frac{B}{x + 2} + \frac{C}{(x + 2)^2}$ है,तो $A - B - C = $

  • A
    $3$
  • B
    $-1$
  • C
    $5$
  • D
    $\text{इनमें से कोई नहीं}$

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यदि $\frac{3x + 4}{{(x + 1)}^2(x - 1)} = \frac{A}{x - 1} + \frac{B}{x + 1} + \frac{C}{{(x + 1)}^2}$ है,तो $A = $

यदि $\frac{3x^2+x+1}{(x-1)^4} = \frac{a}{(x-1)} + \frac{b}{(x-1)^2} + \frac{c}{(x-1)^3} + \frac{d}{(x-1)^4}$ है,तो $\left[\begin{array}{ll}a & b \\ c & d\end{array}\right]$ का मान ज्ञात कीजिए।

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