Posted by Sheila on Wednesday, September 7, 2011 at 1:47pm.
In google type:
quadratic equation online
When you see list of results click on:
Free Online Quadratic Equation Solver:Solve by Quadratic Formula
When page be open in rectangle type:
2x^2 + 5x = 10
and click option:
solve it!
You wil see solution step-by-step.