It explains fully on how to do any question, this app is incredible, I'm in 7th grade and got suggested this by my friend's older brother who is in high school, this app is my saving grace, thank you to the developers and maths geniuses that were able to create this beauty.
I am using it because I went on a trip and missed 10 pages of math. Its new version must show the alternative form as shown in its earlier version. I never understood the stuff we did in the lesson and struggled with studying.
Just search for the term manually, it's a very good app, i always wanted an app that could do what This apps does and i was suprised when it actually existed. I didn't get any ads, but that might not be normal. You should really get this app for your school and it makes school easier, and faster ,to finish.