Question

if the root of the equation 2x²+4x+k=0 are equal than value of k is​

Answer 1

Answer:

the value of k is 1.

Step-by-step explanation:

2x2 + 4x + k =0

for equal roots,

b2-4ac =0

Here,

a = 2

b= 4

c = k

So,

b2 - 4ac =0

(4)2 - 4x2xk = 0

8 - 8k = 0

Dividing equation by 8, we get

1 - k = 0

=> k =1

Therefore, the value of k is 1.