Question 50656
Set the equation equal to zero:
8k^2+5k=2k^2+4
8k^2 -2k^2 + 5k -4 = 2k^2 + 4 - 2k^2- 4 
6k^2 + 5k - 4 = 0


Factoring this trinomial is the hard part!!  Try this combination:
6k^2 + 5k - 4 = 0
(3k + 4 )(2k - 1)= 0
3k = -4   or 2k = 1
k= -4/3  or k = 1/2


R^2 at SCC