You can put this solution on YOUR website! Assuming that you mean , the first step is to set the equation equal to zero to write , and graph . The solution will be the value(s) of x where this graph crosses the x axis. You can assume because of the square root that . The value of x where the graph crosses the x axis is the solution for this equation:
The normal graph for x from -10 to 10 may NOT work here. You may need to use a value of x larger than 10. Let's try graphing up to x= 20 and see if the graph crosses the x axis. It turns out that x= 11 is the value that works, so this is the solution. X=11, and it checks also!
