As he worked, the "cheat sheet" transformed into a tutor. He began to see the logic behind the symbols. By the time he reached the final answer—

He typed "GDZ po algebra 10 klass" into the search bar. Within seconds, a dozen sites appeared, promising the holy grail of answers. He clicked the first link and scrolled through the familiar layout. He found his textbook's cover—the one with the abstract geometric shapes—and clicked on "Exercise 442, Part B." There it was. The step-by-step breakdown.

—he felt a genuine spark of triumph. He closed the GDZ tab, shut his laptop, and packed his bag.