The inequality is .

Consider .

Multiply each side by negative 1 and flip the inequality symbol.

Rewrite the inequality as follows :

There are two ways this product could be greater than or equals to zero.Two factors must be negative or zero and two factors must be positive or zero.

Case 1 :

and

and .

Thus, the solution set is .

Case 2 :

and

and .

Thus, the solution set is .

The solution set of is .