The symbols () are called parentheses or round brackets. They are used to group or enclose information within a text. This information can be additional details, explanations, or calculations.
Here are some common uses of parentheses:
* Grouping: In mathematics, parentheses are used to indicate the order of operations. For example, in the expression 2 * (3 + 4), the parentheses tell us to add 3 and 4 first, then multiply the result by 2.
* Additional Information: Parentheses can be used to provide extra information that isn't essential to the main sentence. For example, "John (my best friend) is coming over."
* Enumerations: Parentheses can be used to number or letter items in a list. For example, "(1) First item, (2) Second item."
* Accounting: Parentheses are often used to indicate negative numbers or losses in financial statements.
* Programming Languages: Parentheses are used in various programming languages for different purposes, such as function calls, expressions, and control flow.
If you have a specific context where you encountered these parentheses, please provide more information so I can give you a more accurate expla
nation.

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