Find the value of a for which the Quadratic equations `5x^2 - 4ax + 7` has equal roots​

What is the value of k for which the quadratic equation 3x^(2) - kx+ k = 0 has equal roots ?

Find the values of k for which the quadratic equation 9x^(2)-3kx+k=0 has equal roots.

What is the value of 'p' for which the quadratic equation 2px^2 + 6x + 5 = 0 has equal roots.

Write all the value of p for which the quadratic equation x^(2) + px + 16 = 0 has equal roots. Find the roots of the equation so obtained.

Write all the values of p for which the quadratic equation x^(2) + px + 16 = 0 has equal roots . Find the roots of the equation so obtained .

Find the value of p for which the quadratic equation x^(2)+p(4x+p-1)+2=0 has equal roots :

Write the value of k for which the quadratic equation x^(2)-kx+4=0 has equal roots.

Determine the value (s) of p for which the quadratic equation 4x^(2) - 3px + 9 has real roots.