It is a bad app when I scan the promblem it told that the equation isn't contained or error it makes me angrier and if I type the promblem it told me the same message and when I draw the promblem it quit the app and it tells me that microsoft math isn't responding I try it sk many times and it is making the same thing I unistall it and I reinstall it and makes the same so I will unistall it and please microsoft Math please fix the promblem because it is so bad we want to do my homeworks