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.
Find out everything you need to know about it here. Then, why do we expand brackets in algebra?
“Expanding” means removing the ( ) but we have to do it the right way! Whatever is inside the ( ) needs to be treated as a “package”. So when multiplying: multiply by everything inside the “package”.
Similarly, what do double brackets mean? Double brackets or [] in math refer to rounding off the value inside to its greatest integer less than or equal to the value.
In this regard, how do you expand a polynomial function?
To expand a polynomial, multiply its factors (often by using the distributive property) or perform the indicated operations. Then combine all like terms. Expand the following expression. Remembering the order of operations, we take care of exponents before multiplication.