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All the definitions and formulas for all topics of school mathematics in grades 5-11 in one book! The material is systematised in an easy-to-use form. The guide will help students: o quickly find and recall the necessary theoretical material; o apply knowledge in practice, thanks to the examples given; o easily prepare for any diagnostic work, exams. We have also added handy cut-off appendices and reminders with the most popular formulas for each lesson! Buy the book and you will be able to easily and conveniently acquire knowledge of the entire course of school mathematics.