Question 329534
(t^2 - t - 12) and (t^ + 2t - 24)

(t-4t+3t-12) ----     (t^2+6t-4t-24)
(t(t-4)+3(t-4))----    (t(t+6)-4(t+6))
(t+3)(t-4)  ----        (t+6)(t-4)


...
LCM = (t+3)(t-4)(t+6)