How do I keep the answer on the screen long enough to write it down?

If it's that long, I guess you can take a screenshot of what the problem is, and then upload it here. Press the image button. I hope a moderator will help you, but for now, I guess you can take a screenshot 

 

 

 

 

 

 

-iamadumb6thgrader

I tested it, and I think it goes down all it goes. If you use latex, I guess you can put it in text, or you can press the latex button like this:

\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\) Just press the latex button.