how to solve a quadratic inequality
in the case you have ax2+bx+c>n where a,b,c and n are all real integers (non fractions, ration numbers that can be +ve or -ve) use the quadratic formula [-b+/-(b2-(4c))1/2]/2a to first find the roots of the curve. draw the curve intersecting the x axis at these points. you will be able to see where the curve is larger than x=n and be able to shade the correct region.
