### Home > INT3 > Chapter 4 > Lesson 4.1.2 > Problem 4-22

4-22.

Solve the inequalities below. Check your solutions, if possible.

Note the absolute value. When is the absolute value of a quantity greater than or equal to

? all real numbers

Rewrite the inequality as an equation, factor, and solve for

. Since this is an inequality, these are the boundary points.

The boundary points areand . Plot your boundary points on a number line. Test a point in each region to see which region(s) make the inequality true.