What is the slant asymptote of f(x)=2x3+x2−5x2−1f(x) = \frac{2x^3 + x^2 - 5}{x^2 - 1}f(x)=x2−12x3+x2−5?
y=2x+1y = 2x + 1y=2x+1
y=2x−1y = 2x - 1y=2x−1
y=x+2y = x + 2y=x+2
y=2xy = 2xy=2x