Can someone please help ? I need this to graduate ! And i give out medals

What are the possible rational zeroes of this function?
f(x) = 3x3 – x2 + 15x + 5

Question

Can someone please help ? I need this to graduate ! And i give out medals 

What are the possible rational zeroes of this function?
f(x) = 3x3 – x2 + 15x + 5

noelgreco · Answer

The possible rational zeros of a polynomial are all rational numbers whose numerators are all the integer factors of the constant term, over all integer factors of the coefficient of the leading term.  I'll start$$\pm \frac{ 5 }{ 3 }$$

anonymous · Answer

I still dont understand

anonymous · Answer

Would the next one be +-1 over 3

noelgreco · Answer

Good.

noelgreco · Answer

One more...
Don't forget the other 1!

noelgreco · Answer

Did you get them all?