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College Algebra: Algebraic Expressions

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이 집합의 용어 (10)

  • What is an algebraic expression?
    A combination of numbers and variables with math operations.
  • What is a variable in algebraic expressions?
    A letter representing any number whose value can vary and is usually a letter.
  • What is a coefficient?
    A number multiplying a variable whose value doesn't vary and is usually at the front.
  • What is a constant in algebraic expressions?
    A number without variables whose value doesn't vary and is usually at the end.
  • What symbol forms an equation when placed between expressions?
    An equal sign (=) forms an equation between expressions.
  • What does evaluating an algebraic expression mean?
    Substituting given values for variables and using PEMDAS to simplify.
  • What is the order of operations in algebra?
    Parentheses, Exponents, Multiply/Divide, Add/Subtract.
  • What is the difference between numerical and algebraic expressions?
    Numerical expressions have numbers and operations; algebraic expressions also include variables.
  • What does an exponent represent?
    Repeated multiplication of the base by itself, indicated by the exponent or power.
  • What is the base in an exponent?
    The number being multiplied repeatedly.