Question:
what are expresions
Answer:
In mathematics, an expression or mathematical expression is a finite combination of
symbols that is well-formed according to rules that depend on the context. Mathematical
symbols can designate numbers (constants), variables, operations, functions, brackets,
punctuation, and grouping to help determine the order of operations.
In other words, numbers, symbol, and operators (such as +, -, * and /) grouped together
that show the value of something.
Ex: 2x + 3, 5x - 2, 3x/10, 5x2 - 2x + 7 are expressions.
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