The inequality algebraically function is .

Step 1: Write the inequality so that a rational expression is on the left side and zero is on the right side.

.

Step 2: Determine the real zeros (-intercepts of the graph )of and the real numbers for which is undefined.

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

The zeroes of is or and  .

Step 3: Use the zeros and undefined values found in Step 2 to divide the real number line into intervals.

The function is defined for all values of except at   or and  .

The function intervals are .

Step 4: 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.

The real zero of numerator is  , and  .

So the real zeros are divide the - axis into four intervals.  

Choosing a number for in each interval and evaluating .

The Solution of algebraical inequality are in the intervals .