The inequality function is . 

Write the inequality so that a rational expression is on the left side and zero is on the right side.   

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Determine the real zeros of ( -intercepts of the graph) and the real numbers for which is undefined :

The zeros of the function are the values of for which .

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Consider the numerator .

The zeros of are and

Therefore the zeros of the numerator are and .

A rational function is undefined when denominator is zero.

is undefined for .

Use the zeros and undefined values found in Step 2 to divide the real number line into intervals. 

Denominator of the function should not be zero.

The function is defined for all values of except at .

The function intervals are and .

Select a number in each interval, evaluate  at the number, and determine whether is positive or negative.

If is positive, all values of in the interval are positive. If is negative, all values of in the interval are negative.

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The real zeros of numerator are and .

The real zero of denominator is .

Since there are real zeros, divide the - axis into four intervals.

The hallow circle represents the real zeros of the numerator.

The solid circle represents the real zeros of the denominator.

Choose a number for in each interval and evaluate .

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