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COMEDK2014MathematicsLimits

_ x - 2 x-1 x²+2 x+1 is equal to

Options

  1. A2
  2. B-2
  3. C1
  4. D-1

Correct answer

B. -2

Step-by-step solution

_ x - 2 x-1 x²+2 x+1 = _ y -2- 1 y 1- 2 y + 1 y² [ put x=-y, x - ]=- 2 1 =-2

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