Math help real fast

[Taz]

Ok im done i only did the second one he will understand and thanks for the help you guys and i had a procedure that i did that he showed us so you guys prob didn't know it.

---------- Post added at 092 PM ---------- Previous post was at 091 PM ----------

I see.
the use this formula:
[-b+-√(b^2-4.a.c)]/2.a

---------- Post added at 101 PM ---------- Previous post was at 101 PM ----------

12x^2-36x-60=
12 is a
36 is b
60 is c

I see the one your doing but thats not the one im doing i did that procedure a while ago i got it this one is different.