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

The equation has equal root which means d = 0d = b2 – 4ac = 0Here a = a, b = 2b, c = c(2b)2 – 4 ac = 0b2 – ac = 0c =

Q19 of 242 Page 9

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

The equation has equal root which means d = 0

d = b² – 4ac = 0

Here a = a, b = 2b, c = c

(2b)² – 4 ac = 0

b² – ac = 0

c =

If the sum of the roots of the equation x² – x = λ (2x – 1) is zero, then λ =

If x = 1 is a common root of ax² + ax + 2 = 0 and x² + x + b = 0 then, ab =

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

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