The inequality is .

To solve the above inequality solve the related equation .

Find the intercepts.

Find the -intercept by substituting in .

Solve for .

or

or

The -intercepts are or .

Find the -intercept by substituting in .

-intercept is .

Find the vertex of above quadratic function .

Compare it to .

, and .

Since , then the parabola open upward.

-coordinate of vertex is .

Vertex .

Graph :

(1). Draw the coordinate plane.

(2). Plot the intercepts and vertex.

(3). Connect the plotted points.

Graph of the quadratic equation  : \ \

Since the inequality symbol is , the solutions are included in the solution of the inequality.

The graph is below the -axis between and .

Solution of the inequality is .

Graph the solution set on a number line.

The inequality solution set is .