2In American usage brackets refer to the box-type brackets while parentheses refer to a different type of punctuation mark. If the parentheses or brackets occur in the middle of the sentence then any punctuation within the sentence must be placed outside of the parentheses or brackets. 5 2 2 4.
The parentheses group 3 and 2 together and 6 and 4 together and the square brackets tell us to do all the calculations inside them before multiplying by 4.
Parentheses are more important than brackets and braces and are more often encountered in written language. In elementary algebra parentheses are used to specify the order of operations. Curly brackets can also be used in sets in math. The most important use of parentheses also known as the round brackets should include anything you consider to be important but not part of the sentence something that you want readers should know.