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AP EAMCET · Maths · Quadratic Equation

\(\begin{aligned} & \text { If } \frac{x^3}{(2 x-1)(x-1)^2}=A+\frac{B}{2 x-1}+\frac{C}{x-1} \\ & +\frac{D}{(x-1)^2}, \text { then } 2 A-3 B+4 C+5 D=\end{aligned}\)

  1. A \(\frac{21}{2}\)
  2. B \(\frac{23}{2}\)
  3. C \(\frac{17}{2}\)
  4. D \(\frac{19}{2}\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(\frac{17}{2}\)

Step-by-step Solution

Detailed explanation

We have, \(\frac{x^3}{(2 x-1)(x-1)^2}=\frac{x^3}{2 x^3-5 x^2+4 x-1}\) \(=\frac{1}{2}+\frac{1}{2}\left(\frac{5 x^2-4 x+1}{2 x^3-5 x^2+4 x-1}\right)...(i)\) Now, consider…