Textbook. 12th Edition . , ster. - M. : Mnemosin, 2010. 224 s. The textbook contains the final theoretical material of the course of algebra of the main secondary school . It is based on a fundamentally new concept, the key concepts of which are mathematical language and mathematical model, and the priority content-methodical line is functionally graphical. A large number of examples are included with detailed and detailed solutions. Exercises for independent work are placed in the second part (in the task book) . Affordable and detailed presentation of the material teaches schoolchildren to read educational literature and independently search for information .