## Precalculus: Mathematics for Calculus, 7th Edition

$\frac{x+4}{x+1}$
Factor $\frac{(x+3)(x+4)}{(x+2)(x+1)}\times\frac{(x+3)(x+2)}{(x+3)(x+3)}$ Cancel out common factors $\frac{x+4}{x+1}$