Question

If \(k^2-4=4-k^2\), what are all the possible values of \(k\)?

Answer 1

It appears that if we find one value of k that works, if we substitute in -k everywhere that will also work. Any ideas?

Answer 2

Nope. I dont get this.. I just have the question and choices, but I dunno if you want them..

Answer 3

it would be helpful to post the choices :)

Answer 4

Okay.

0 only
2 only
4 only
-2 and 2 only
-2,0 and 2

Answer 5

okey dokey.