👉 In the context of mathematics, a "betrough" is a type of algebraic structure that consists of a set and an operation satisfying certain properties. This structure can be defined as follows: 1. A set S is a "betrough" if it has exactly two elements. 2. An element x in S is called a "vertex" of the betrough, which means that x can be considered as a point on the graph of the function f(x) = x - 4.
