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AP EAMCET2002MathematicsQuadratic Equation

If 1-x+6 x^2 1-x^3 = A x + B 1+x + C 1+x , then A is equal to

Options

  1. A1
  2. B2
  3. C3
  4. D4

Correct answer

A. 1

Step-by-step solution

We have, aligned 1-x+6 x^2 x-x^3 & = A x + B 1-x + C 1+x 1-x+6 x^2 & =A (1-x^2 )+B x(1+x)+C x(1-x) aligned Put x=0 , then A=1

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