Is there a formula for dummies? I entered a simple formula but don't see how to enter square root for instance, not sure where symbols are located, there was a box that popped up but didn't have regular symbology, square root, 1/x and such.

Also how do you solve for a problem, didn't see that or how to enter variables. Can I in fact actually solve equations? Sorry, I just came across this formula thing and know pretty much zero about it. Thanks for any replies.