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If k is one of the roots of the equation x(x+1)+1=0 , then what is its other root?

Options

  1. A1
  2. B-k
  3. Ck^2
  4. D-k^2

Correct answer

C. k^2

Step-by-step solution

Given equation: x(x+1)+1=0D=(-1)^2-4(1)(1)=-3 0 . Two roots of the equation are same as cube root of unity ( and ^2 ). Hence, other roots =K^2 .

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