For the (Г.В. Дорофеев), there isn't a single official "paper" of ready-made homework (GDZ) in the sense of a standalone workbook. Instead, "GDZ" is typically found in two formats: 1. Physical "All Homework" Books
Дорофеев Алгебра 9 купить на OZON по низкой цене gotovye domashnie zadaniia po algebre dorofeeva 9 klaas
If you are looking for specific paper resources used in schools for homework and testing, the official UMK (Educational Methodical Set) includes: For the (Г
(Дидактические материалы) which provide extra problems and independent works. Online Alternatives (Printable) Supporting Paper Materials
(Контрольные работы) by Kuznetsova, Minaeva, et al.. Available at Yandex Market .
Publishers like (Экзамен) or VAKO (ВАКО) often release paper collections titled "All Home Work" (Все домашние работы) for the 9th grade. These are printed books that contain step-by-step solutions for every exercise in the Dorofeev textbook. You can find these at major retailers: Ozon Wildberries 2. Supporting Paper Materials