How to divide this polynomial, with x -1 by using long division? I got stuck at because after that, the remainder is 0 but there is still the -2 remaining. However, the solution is . How?
Use the rational zeros theorem to determine possible roots of the function.
When you have them, make use of the fact that if x=c is a root of f(x), then x-c is a factor of the polynomial function f(x). when you have found all factors x=c, then divide.
Possible zeros. 1,-1,2,-2.