Question

Determine the values of k which will make the roots of the equation x^2-kx-k=0 equal.

Answer 1

have you tried applying the quadratic formula?

Answer 2

if the roots are equal then the sqrt needs to be zero ....

Answer 3

There are to answer, right? Is it 0, -4?

Answer 4

that does look correct to me

k^2 +4k = 0

k(k +4) = 0

yep

Answer 5

So, the answer are 0 and -4?

Answer 6

so long as k = 0 or -4 makes: k(k +4) = 0 a true statement, then yes