Chapter 3, Polynomial and Rational Functions - Section 3.6 - Rational Functions - 3.6 Exercises - Page 344: 3

$-1,\quad 2$

The x intercepts are values of x where $r(x)=0.$ $r(x)=0$ occurs when the numerator equals 0. The numerator is zero for $x=-1$ and for $x=2$ (by the zero product principle). Fill the blanks with: $-1,\quad 2$