Answer and Explanation: Double brackets or [[]] in math refer to rounding off the value inside to its greatest integer less than or equal to the value.

Secondly, is expanding brackets the same as multiplying brackets? Expanding brackets involves removing the brackets from an expression by multiplying out the brackets. When multiplying out double brackets, every term in the first pair of brackets must be multiplied by each term in the second. When expanding brackets, be very careful when dealing with negative numbers.

Besides, how do you simplify expressions?

Here are the basic steps to follow to simplify an algebraic expression:

remove parentheses by multiplying factors. use exponent rules to remove parentheses in terms with exponents. combine like terms by adding coefficients. combine the constants.

How do you expand brackets?

Expanding brackets

To expand a bracket means to multiply each term in the bracket by the expression outside the bracket. For example, in the expression , multiply both and 7 by 3, so: . Expanding brackets involves using the skills of simplifying algebra. Remember that and . Expand .