Can someone please help me with problem #18 of The Rational Root Theorem Worksheet?

I found the possible rational roots but I need the work shown for it. I also want you to show your work for how you got the factors of the constant and factors of the leading coefficient.

18. f(x) = 2x^3 + 9x^2 + 19x + 15



Below is an example problem for how you're supposed to do it:​