posted by kc .
list all the possible rational zeros of f using the rational zero theorem. then find all the zeros of the function.
This is just asking you to factor. I'll do the first one for you (I forget how to do problems like the second.) x^2-6x+5..you have to get the two numbers to multiply to your last number (5) and add/subtract up to your middle number (-6), so the numbers you want are -5 and -1, written like this (x-5)(x-1), where x=5 and 1. You can then plug either of those numbers back into the equation and you see that both work.