Definitions Relating to Expressions
  • A mathematical Expression is a combination of symbols that can designate numbers (constants), variables, operations, symbols of grouping and other punctuation.

  • Literal Numerals are letters that stand for numbers (e.g. a, b, x, y).

  • A Constant represents a known value in an algebraic expression.

  • A Variable is a symbol that represents a changeable or undetermined quantity in an algebraic expression.

  • Operations include addition, subtraction, multiplication, division and exponentiation.

  • Grouping Symbols include parentheses (), curly brackets {}, or square brackets [].

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