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 used in mathematics for three main purposes. First perform the operations within the parenthesis Step 2.
Then perform multiplication and division from left to right.
5 2 2 4. Then perform multiplication and division from left to right. 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. You can easily control the size and style of brackets in LaTeX.