Determine the excluded values for the domain of f(x)=x+1x3+x2−x−1f(x) = \frac{x+1}{x^3+x^2-x-1}f(x)=x3+x2−x−1x+1.
x=1,0x=1, 0x=1,0
x=1,−1x=1, -1x=1,−1
x=−1x=-1x=−1
x=1,−1,0x=1, -1, 0x=1,−1,0