Question

sum of the roots of quadratic equation their product find k if equation is x2-4kx+k+3=0

Answer 1

given 
sum=product of roots
sum of roots=4k
product of roots=k+3
4k=k+3
3k=3
k=1
value of k=1

Answer 2

Here it is given that
Sum of roots = product of roots
So, we know that sum of roots =
$\frac{c }{a}$
Then, sum of roots =k+3
And, product of roots =
$\frac{ - b}{a}$
Then product of roots = 4k
Therefore, 4k = k+3
3k = 3
k= 1
Hence k = 1