Split
into two component segments,
and
, parameterized by


respectively, with
, where
.
We have


where 
so the line integral becomes



if you are trying to work out -3/4 - (-1/4 - 1/2) then the answer is 0
C
Trinomial means three parts
A and C or trinomial's but the degree on a is at three and the degree of C is a one