For what values of 'a' does the quadratic equation `x^(2)-ax+1=0` not have real roots?

For what values of k does the quadratic equation 4x^(2) - 12x - k =0 have no real roots ?

For what positive values of k , does the quadratic equation 3x^(2) - k x+ 3 = 0 not have real roots ?

For what value of k the quadratic equation x ^(2) - kx +4 have real and equal roots ?

Find the roots of the equation x^(2) +7x+10=0 OR For what value(s) of ‘a’ quadratic equation 30 ax^(2) -6x+1=0 has no real roots?

The quadratic equation ax^(2)+bx+c=0 has real roots if:

Integral value(s) of a such that the quadratic equation x^(2)+ax+a+1=0 has integral roots is/are

For which value of p among the following, does the quadratic equation 3x^(2) + px + 1 = 0 have real roots ?

For what values of k are the roots of the quadratic equation 3x^(2)+2kx+27=0 real and equal?

If the roots of the quadratic equation x^(2) +2x+k =0 are real, then