noun

algebraa symbol that represents an unspecified value or quantity.
A variable is a symbol that represents an unspecified value or quantity. Variables are used in mathematical expressions, equations, and functions to denote quantities that can change or vary. For example, in the expression , the symbol is a variable representing the unknown value that is added with .
A coefficient is a numerical or constant quantity placed before and multiplying the variable in an algebraic expression.
A constant is a value that does not change or vary in a mathematical expression or equation. It is the opposite of a variable, which can take on different values. Constants can be numbers, symbols, or even functions that remain unchanged throughout a given problem or context.