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If and are the roots of the equation 4 x^2+2 x-1=0 , then which one of the following is correct?

Options

  1. A=-2 ^2-2
  2. B=4 ^2-3
  3. C= ^2-3
  4. D=-2 ^2-2

Correct answer

A. =-2 ^2-2

Step-by-step solution

and are roots of 4 x^2+2 x-1=0 . Sum of roots ( + )=- 2 4 =- 1 2 =- 1 2 - = -1-2 2 aligned & and 4 ^2+2 -1=0 & 4 ^2=1-2 aligned Now, -2 ^2-2 = 2 -1 2 -2 = -2 -1 2 = .

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