This math topic involves practicing with quadratic discriminants, specifically concerning the number of roots of a quadratic equation. Questions in this topic cover different scenarios, asking the learner to identify quadratic equation solutions that yield specific types of roots: two real roots, two complex roots, or exactly one real root. The responses involve evaluating representations of quadratic solutions, either as two different real numbers, a pair of complex numbers, or a single real number. This set of problems, categorized as Level 1, introduces the basic concepts of discriminants within quadratic equations.