__Step to solve a Quadratic Inequalities__

**: Rewrite the inequality with zero on one side and make sure a > 0**

*Step 1***: Find where it crosses the x-axis (Put**

*Step 2**y*= 0)

**: Sketch the graph and shade the region to find the range of values of**

*Step 3**x*

__Example__Find the range of values of x for each of the following :

(a) ${x}^{2}-4x+3<0$

(b) $12+10x-2{x}^{2}<0$