posted by jenna d .
factor it. 81r^2-36rs+4s^2
you try, see above example that I did for you.
you won't learn how to factor without trying
post back where you are stuck
i have no idea how to do this...
81r^2 - 36rs + 4s^2
this one is a little harder than the above one I did for you
(9r - 2s)(9r - 2s) = (9r - 2s)^2
this is factored form.