k+5=-6divided byk

k^+5k=-6
k^+5k-6
(k-6)(k+1)
k-6=0 k=6
k+1=0 K=-1

k + 5 = -6/k

k^2 + 5 k = -6

k^2 + 5 k + 6 = 0 NOTE - we have a sign problem

(k+2)(k+3) = 0
k = -2 or k = -3