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AP EAMCET2006MathematicsLimits

_ x [ x^2+2 x-1 -x ] is equal to :

Options

  1. A1 2
  2. B4
  3. C1

Correct answer

3

Step-by-step solution

_ x [ x^2+2 x-1 -x ]= _ x [ . (x^2+2 x-1 . -x ) ( x^2+2 x-1 +x ) x^2+2 x-1 +x ]= _ x [ x^2+2 x-1-x^2 x^2+2 x-1 +x ]= _ x [ 2- 1 x 1+ 2 x - 1 x^2 +1 ]= 2 2 =1

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