0
$\begingroup$

A value c for which the given equation has 2 distinct negative roots.

$$ x^4 + 2cx^2 + 2cx + 1 + x^2 = 0$$

I solved it up to here, what does this imply ?

$$ \sqrt{ 1+c^2 } > 2 - c $$

  • 0
    Could you should how you arrived at this inequality? It's not correct.2012-12-16

1 Answers 1