Question

The value of k for which equation x2-4x+k=0 has equal root is​

Answer 1

Answer:

4

Step-by-step explanation:

equation x2-4x+k=0 has equal roots

a= 1,

B=-4

c=k

=> b2-4ac=0( equation has equal roots

==> (-4) ^2 -4(1) (k) =0

=> 16-4k = 0

=> 4k= 16

=> k= 16/4

=> k = 4