Start adding and subtracting rational expression 5
Adding and subtracting rational expressions 5
Add final newline
Simplify answer if there is a constant we can factor out
Add punctuation
Exercise for dragging parabola
Add validator and correct equation
First hints with Show Me buttons
Finish hints
Make suggested changes
Improve hints
Add comma
Replace buttons with links
Remove darts exercise
Exponents with postive and negative bases
Move function for getting tool properties out of exercise and into utils
Start copying angle exercise
Hints for copying an angle
Get valid validator
Remove debugging