The answer is 2x-5 (I hope that's what you meant)
Answer:
3x(x-1)
Step-by-step explanation:
y = 
Factors are:
3x, (x-1)
Intercepts are:
3x = 0 , x = 0
x - 1 = 0, x = 1
for all positive integers (like n = 1, 2 or 5) the conjecture holds true but not for negative values like if n = -3 then the result will not become positive, because:

which is not positive.

P<6 is the solution
Be reminded <> change direction when you divide or multiply by a negative number.