For the quadratic equation, `x^2+kx+k` to have imaginary roots, the possible values of k are?

If one real root of the quadratic equation 81x^2 + kx + 256=0 is cube of the other root, then a value of k is

If x = 3 is one root of the quadratic equation x^(2) - 2kx - 6 = 0 , then find the value of k .

If -4 is the root of the equation x^(2)+kx-4=0 and the quadratic equation x^(2)+px+k=0 has equal roots then find values of k and p

If one of the roots of the quadratic equation x^(2) – 7x + k = 0 is 4, then find the value of k.

If one of the roots of the quadratic equation kx^(2) + 2x-8=0 is -2, then what is the value of k ?

If the roots of the quadratic equation x^(2)-2kx+2k^(2)-4=0 are real,then the range of the values of k is

If one root of the quadratic equation kx^(2) – 7x + 5 = 0 is 1, then find the value of k.

If the equation 4x^(2) - 2kx + 3k =0 has equal roots, then what are the values of k?

If quadratic equation 3x^(2) - 4x + k = 0 has equal roots, then the value of k is............... .