Please write this poly as 2x^2-7x-15, using " ^ " to indicate exponentiation.
There are various ways in which we could factor 2x^2-7x-15. I will apply the quadratic formula here. a=2, b= -7 and c= -15.
Then:
-(-7) plus or minus sqrt(49-4(2)(-15) )
x = -------------------------------------------------------
4
7 plus or minus sqrt(169)
= --------------------------------------- => {5, -3/2)
4
The corresponding factors of the given poly are (x-5) and (x+3/2).