ok so you can leave the 2x out since that is already a factor
form is normally
ax^2+bx+c
a=first term
b=second term
c=third term
so now we look at the first terms
it is 1
good
now we look at the value of the middle and lastt term
second term=-1
third term=-6
we need to find what 2 factors of -6 add to -1
-6=-3 times 2
-3+2=-1
(x-3)(x+2)
so the factored form is
(2x)(x-3)(x+2)