a combination of variables, numbers, and arithmetic operations; also called a variable expression

a collection of letters and numbers combined by the four basic arithmetic operations

a mathematical phrase that can contain ordinary numbers, variables (like x or y) and operators (like add,subtract,multiply, and divide)

a mathematical phrase that is written using one or more variables and constants, but which does not contain a relation symbol ()

an infix expression (in contrast to a postfix RPN program)

a number, variable or combination of the two connected by some mathematical operation like addition, subtraction, multiplication, division, exponents, and/or roots

Numeral and/or variable joined by any combination of the four basic operations (+, -, x, /) and involving any power(s) of numeral and/or variable (e.g., 3-8, 7x4, 4+X, Y/2, N-2, 3(4+8)-7, Y2-2).

An expression consisting of constants, variables, grouping symbols, and symbols of operations arranged according to the rules of algebra.

an expression containing numbers and variables (e.g., 7x), and operations that involve numbers and variables (e.g., 2x + y or 3a – 4). Algebraic expressions do not contain equality or inequality symbols.

An expression that contains a variable. For example, if Maria is 2 inches taller the Joe, and if the variable represents Maria's height, then the algebraic expression – 2 represents Joe's height.

s -variables and numbers connected by mathematical operations.