Canadian Adult Education Credential (CAEC) Practice Test

Second-degree polynomial equations written in standard form are called quadratic equations. In standard form you write it as ax^2 + bx + c = 0, with a ≠ 0, and the highest exponent being two. The term quadratic comes from the squared term x^2, signaling the degree is two. The other options refer to different topics—data and statistics, word problems, and measures like mean, median, and mode—so they don’t describe these equations.