Mathematics factorization and expand are the unit a 3rd grader of junior high school and a 1st grader of high school learn at school in Japan.
Let's Brain Training!!
Add level up function
![relaxing *whispered* Math ASMR | Shortcut Formulas for Factoring-Algebra [Educational Asmr] screenshot 2](https://i.ytimg.com/vi/V892ni7rhRk/mqdefault.jpg)
9Apps 4.9
