Question

the value(s) of k for which the quadratic equation 2x2 + Kx +2= 0 has eual root is
(a) 4
(b)_+4
(c) -4
(d)0
​

Answer 1

Answer:

Given equation is 2x2 – kx + k- 0

On comparing with ax2 + bx + c = 0, we get

a = 2, b= – k and c = k

For equal roots, the discriminant must be zero.

Hence, the required values of k are 0 and 8.

Answer 2

solution of this question in image