You can put this solution on YOUR website! Thanks for posting the problem correctly! first subtract 10 from each side of the equal sign next pretend instead of 0 on the right side you have y plug in a few values for x (any values) and evaluate, this will give you the matching y's. Here's the table
x | y
________
0 | -10
-2| 0
5 | 0
feel free to do more points, you need quite a few to graph a quadratic but you get the point.
Now plot these points
As you can see from the graph it crosses x axis at 5 and -2
Now to check the results plug in the solution one at a time
check for x=5 left side equals right side so x=5 is a solution
check for x=-2 left side equals right side so x=-2 is a solution
