The plus symbol, "+", is used to indicate an addition.
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It is a symbol representing addition, one of the basic binary operations in arithmetic.
A "term" is each of the parts of the expression that are combined with plus or minus symbols. For example, in x2 + xy + y2, you have three terms; one before the first plus symbol; one between the two plus symbols; one after the second plus symbol.
The inequality symbol for less than or equal to: ≤
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