For what value of k the equation X square - 6 x minus 2 equals to zero – InterviewSolution

1.

For what value of k the equation X square - 6 x minus 2 equals to zero has real roots

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Answer:

SINCE ROOTS are real therefore DISCRIMINANT is greater than zero.

$d > {b}^{2} - 4ac$

$d > { (- 6)}^{2} - 4 \times 1 \times - 2$

$d > 36 + 8$

$d > 44$

Therefore, discriminant is greater than 44.

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