Question 754614
-3t(t+4)-(t+5)=9
-3t^2 -12t -t -5 = 9
-3t^2 - 13t - 5 = 9
-3t^2 - 13t - 14 = 0
(-3t - 7)(t + 2) = 0

 -3t - 7 = 0
      -3t = 7
        t = 7/-3
   t + 2 = 0
       t = -2
Hope this helps
:-)