For individual or collaborative investigationInequalities that involve more than two facto...

For individual or collaborative investigation

Inequalities that involve more than two factors, such as

can be solved using an extension of the method shown in Examples. Work Exercise, to see how the method is extended.

The number line from Exercise should show four intervals formed by the three points. For each interval, choose a number from the interval and decide whether it satisfies the original inequality.

EXAMPLE SOLVING A QUADRATIC INEQUALITY

Figure

EXAMPLE SOLVING A QUADRATIC INEQUALITY

Figure

Exercise

For individual or collaborative investigation

Inequalities that involve more than two factors, such as

can be solved using an extension of the method shown in Examples. Work Exercise, to see how the method is extended.

Plot the three solutions in Exercise on a number line.

Exercise

For individual or collaborative investigation

Inequalities that involve more than two factors, such as

can be solved using an extension of the method shown in Examples. Work Exercise, to see how the method is extended.

Use the zero-factor property to solve