what is an expression?

An expression consisting of arithmetic numbers, letters (used as symbols) and operation signs is called an Algebraic Expression. It is built up from constants, variables, and algebraic operations like addition, subtraction, multiplication and division.

For example:

2x + 3y  

 a 3 + b 3+3ab 2+ 3a2 -  b 

  • 4

an expression contains of variables and constants

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