## Precalculus (6th Edition) Blitzer

Fill the blank with $-c$ $c$
Solving an Absolute VaIue Inequality: If $u$ is an algebraic expression and $c$ is a positive number, then: 1) The solutions of $|u| \lt c$ are the numbers that satisfy $-c \lt u \lt c.$ 2) The solutions of $|u|\gt c$ are the numbers that satisfy $u\lt -c$ or $u\gt c.$ These rules are valid if $\lt$ is replaced by $\leq$ and $\gt \mathrm{i}\mathrm{s}$ replaced by $\geq.$ --- This is case 2. Fill the blank with $-c$ $c$