How is it possible to solve this ? Determine values(s) of k for which

1. kx^2 – x – 4 = 0

2. 3x^2 + 5x + k = 0

3. 4x^2 – 3x + k = 0

4. kx^2 + 3x - 7 = 0

5. kx^2 - x - 3 = 0

Thank you

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- July 17th 2011, 06:29 AMrcsQuadratic equations: what possible values of k.
How is it possible to solve this ? Determine values(s) of k for which

1. kx^2 – x – 4 = 0

2. 3x^2 + 5x + k = 0

3. 4x^2 – 3x + k = 0

4. kx^2 + 3x - 7 = 0

5. kx^2 - x - 3 = 0

Thank you - July 17th 2011, 06:38 AMSudharakaRe: what possible values of k.
- July 17th 2011, 07:28 AMSorobanRe: what possible values of k.
Hello, rcs!

Quote:

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The problem is not clearly stated.

If complex roots are permitted,value of can be used.*any*

If the roots must be real, the discriminant must be nonnegative.

If the roots must be rational, the discriminant must be a square.