Thank you for viewing. This is a formula notebook I created when I was preparing for entrance exams to highly competitive private high schools. It's a formula notebook that can cover even the most difficult problems from top-tier schools nationwide, such as Nada High School. It compiles mathematical formulas that go beyond the middle school curriculum but are applicable to problems found in extremely competitive private high school entrance exams. I am confident that there is no other notebook that compiles such convenient, almost trick-like formulas. If you can freely utilize these formulas, your speed in solving math problems will increase tenfold, and I myself had no equal in mathematics. These are formulas I didn't want to share with anyone, but I am offering them for sale this time. The formulas shown in the photos are just the tip of the iceberg. I would be delighted if this helps you with your studies for highly competitive private high school entrance exams. Thank you for your consideration.