The first few problems were straightforward—simplifying and calculating arithmetic square roots . Maksim felt confident, his pen scratching rhythmically against the paper. But then he hit the quadratic equations section. The coefficients were large, and for a moment, the formula for the discriminant slipped from his mind. He looked at the clock; twenty minutes had already vanished.
When the teacher called for the papers, Maksim handed his in with a sense of relief. He didn't have the official answer key yet—those would only be posted later on sites like Infourok or educational portals—but he knew that the hours of practice with had paid off. The coefficients were large, and for a moment,
Taking a deep breath, he remembered the his teacher had drilled into them. The roots clicked into place: He didn't have the official answer key yet—those