You can put this solution on YOUR website! Hi,
To start off this problem we are going to divide each side by 4 to get the x^2 by itself on one side. Once we do this we will have x^2=9. Our final step to find x is to find the square root of 9. The square root of 9 is 3, which makes x=3 our final answer. Good luck, let me know of any questions you may have. :)