Expanding Brackets
Maths: Edexcel IGCSE Higher, topic 2.1.3
Expanding Brackets
To expand brackets, multiply out each term separately.
First term
Second term
Common Factors
If we find a factor of all the terms in an equation, we can use brackets to take it out the expression. For example, 3x + 6xy + 9x²:
Take out the x
Take out the 3
There are no more common factors
Expanding Brackets
Squares
- To expand a square of a bracket, write it out as two separate brackets and use the normal method.
More terms in the brackets
- We can split longer calculations to make them simpler.