Question 911126
<a href="http://www.algebra.com/my/Completing-the-Square-to-Solve-General-Quadratic-Equation.lesson?content_action=show_dev">http://www.algebra.com/my/Completing-the-Square-to-Solve-General-Quadratic-Equation.lesson?content_action=show_dev</a>


Find x intercepts by solving the equation in standard form with y=0.
Find y intercept by just evaluating y for x=0.
The positive coefficient on the degree-2 term means that the vertex is a minimum.

Discriminant, {{{(-5)^2-4*1*4=25-16=9}}} is a perfect square and a positive value, telling you that the graph has two x-axis intercepts and they are integers.


{{{graph(300,300,-6,10,-6,10,x^2-5x+4)}}}