Rational Inequality with Multiple Critical Points
Algebra
Solve for $x\in\mathbb{R}$:$$\frac{x^2-9}{x^2-6x+8} > 0$$
A$(-\infty,-3)\cup(2,3)\cup(4,\infty)$
B$(-3,2)\cup(3,4)$
C$(-\infty,-3)\cup(2,4)\cup(4,\infty)$
D$(-\infty,-3]\cup(2,3]\cup(4,\infty)$