alleryBrackets are used in expressions for what purpose?
AGrouping terms in order
BMarking the end of a proof
CShowing a decimal point
DWriting a ratio sign
Answer & Solution
Correct answer: A. Grouping terms in order
1. Punctuation marks and brackets are symbols in an expression.
2. They group parts where no well-defined order of operations exists.
3. The end of a proof uses a different mark such as QED.
_Source: Wikipedia, Mathematical notation, Expressions and formulas_
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