: Look specifically for "Section 1" (Standard tasks) and "Section 2" (Advanced tasks).
If you mean the specific softcover booklet dedicated solely to exam practice: gdz na ekzamenatsionnyi sbornik po algebre dorofeeva
Since there are several versions of his books, "GDZ" (Ready Homework Solutions) can typically be found for two main formats: 1. : Look specifically for "Section 1" (Standard tasks)
: Many specific exam tasks from this collection are solved on YouTube by math tutors, which can be more helpful than static answers for understanding the logic. including the newer 2019-2020 editions.
: Provides step-by-step solutions for exercises in the 9th-grade textbook, including the newer 2019-2020 editions.