## Intermediate Algebra (6th Edition)

(x + 1) / ($x^{2}$ + 1)
(2$x^{2}$ - x - 3) / (2$x^{3}$ - 3$x^{2}$ + 2x - 3) = (2x - 3)(x + 1) / (2x - 3)($x^{2}$ + 1) = (x + 1) / ($x^{2}$ + 1)