2.6.1 Steps to solve a Quadratic Inequalities

Step to solve a Quadratic Inequalities

Step 1 : Rewrite the inequality with zero on one side and make sure a > 0
Step 2 : Find where it crosses the x-axis  (Put y = 0)
Step 3 : Sketch the graph and shade the region to find the range of values of  x

Example 
Find the range of values of x for each of the following :
(a) $x^2-4x+3<0$
(b) $12+10x-2x^2<0$