The solution for real numbers is where the parabola cross the x-axis. Before beginning this lesson please make sure that you fully understand the vertex formula factoring quadratic equations and the quadratic formula. 1 You can create a table of values.
Factoring using the quadratic formula and completing the square.
So now we can plot the graph with real understanding. The parabola cross the x-axis at x -2 and x 5. These are the roots of the quadratic equation. While this method works for every quadratic equation there are other methods that are faster.