## Finite Math and Applied Calculus (6th Edition)

$x^{2} -2x-3$
$(x+1)(x-3)$ 1. Multiply the terms that occur first in each bracket. $(x)(x) = x^{2}$ 2. Multiply the outermost terms in each bracket. $(x)(-3) = -3x$ 3. Multiply the innermost terms in each bracket. $(1)(x) = x$ 4. Multiply the last terms in each bracket. $(1)(-3) = -3$ 5. Add all the answers in steps 1-4 to get $x^{2} -3x+x-3$. 6. Simplify to get $x^{2} -2x-3$.