__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 y=0)**

*Step 2***: Sketch the graph and shade the region to find the range of values of x**

*Step 3*

__Example__**Find the range of values of x for each of the following :**

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

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