Which of the following describes the slant asymptote of f(x)=x3+2x2+1x2−1f(x) = \frac{x^3 + 2x^2 + 1}{x^2 - 1}f(x)=x2−1x3+2x2+1?
y=x+2y = x + 2y=x+2
y=x−2y = x - 2y=x−2
y=xy = xy=x
y=2x+1y = 2x + 1y=2x+1