Answer:
Answer is (7xy+2)
Step-by-step explanation:
We shall use grouping method to solve the factor of given expression

In first step we make two group by taking first two terms together
and then taking next two terms together
in first two terms we take 2x as common factors which leave 7xy as first and 2 as second term
likewise we can take -1 common in last two terms and we have again 7xy and 2
now from both expression we get 7xy+2 as common and we get
(7xy+2) (2x-1) as factor
one factor is given in the solution another factor is (7xy+2)