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Home > Maths II > Algebra > Removing brackets

Maths II

Removing brackets

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# Removing brackets (continued)

The examiner will be able to give you more marks if you show your working. Most of us make silly mistakes at some time or another, but getting into the habit of showing some working means you convince the examiner you know what you're doing, even though you slipped up somewhere!

## Example 1

To get the correct answer you multiply out the brackets and collect the like terms.

## Example 2

• First write out the expression carefully.

• Then write it out like this.

• Multiply everything in the first bracket by the second bracket.

• Multiply out everything in each bracket by the figure outside the bracket, one at a time.

• Combine all the answers together.

• Collect like terms.

(-20a comes from putting -10a and -10a together).

### Now try this one.

Question

To get the correct answer you multiply out the brackets and collect the like terms.

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