If the sum and product of the roots of the equation kx2 + 6x + 4k = 0 are equal, then k =

In the given equation kx2 + 6x + 4k = 0Sum of the roots = product of the roots (given)– b/a = c/aHere a = k, b = 6 and c = 4k = K =

Q21 of 242 Page 9

If the sum and product of the roots of the equation kx² + 6x + 4k = 0 are equal, then k =

In the given equation kx² + 6x + 4k = 0

Sum of the roots = product of the roots (given)

– b/a = c/a

Here a = k, b = 6 and c = 4k

K =

The value of c for which the equation ax² + 2bx + c = 0 has equal roots is

If x² + k (4x + k – 1) + 2 = 0 has equal roots, then k =

If sin α and cos α are the roots of the equation ax² + bx + c = 0, then b² =

If 2 is a root of the equation x² + ax + 12 = 0 and the quadratic equation x² + ax + q = 0 has equal roots, then q