Answer
The answer is $(6p-1)(6p+20)$.
Work Step by Step
1. You break apart the "114p" part of the expression leaving $36p^{2} + 120p - 6p - 20$.
2. You factor out "6p" from the expression which results in $6p(6p+20) - 1(6p+20)$.
3. The answer you get should be $(6p-1)(6p+20)$.