Question

On which set of open intervals does this rational function keep a constant sign?

$$\frac{(x - 1)(x - 3)}{x - 1}$$

Accepted Answer

$$(-\infty, 3) \cup (3, \infty)$$

Answer

$$(-\infty, -3) \cup (-3, 3) \cup (3, \infty)$$

Answer

$$(-\infty, 1) \cup (1, 3) \cup (3, \infty)$$

Answer

$$(-\infty, -4) \cup (-4, 3) \cup (3, \infty)$$

Rational Function Inequalities - Factored Quadratic over Binomial - Intervals