Maths Quiz - Level 7-8 Algebra - Linear Brackets (Answers)
By now you'll have done a good deal of work in KS3 Maths all about algebra. You'll be familiar with equations, variables, powers and many other aspects of the subject. But how well do you understand linear brackets?
Equations can often be simplified by removing any brackets. You may have to 'get-rid' of two sets of adjoining brackets so that you can work out the values of the terms within the brackets. Each term in the first bracket needs to be multiplied by each term in the second bracket.
Be careful if there are any powers in your equations. If there are then remember this piece of advice: when multiplying powers, we add them together so y2 x y4 = y6. When dividing powers we take one from the other so y9 ÷ y5 = y4.
The best way to beat the brackets is to practise. Try this quiz and see how well you can deal with them. Take your time and consider your answers carefully. Good luck!
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You can find more about this topic by visiting BBC Bitesize - Equations
A letter multiplied by itself gives us the square of the letter
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When multiplying powers, we add them together
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When dividing powers we take one from the other
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If you add powers together you multiply and if you deduct powers you divide. You would need to know the value of x in order to represent it in another way after adding or subtracting
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Two like terms (+ and + or - and -) will equal a plus; two unlike terms (+ and -) will equal a minus
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Don't forget a minus times a minus equals a plus but a minus times a plus equals a minus
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Remember - a minus times a minus equals a plus but a minus times a plus equals a minus
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Did you remember that a minus times a minus equals a plus but a minus times a plus equals a minus?
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'Simplifying' an expression means 'gathering together' all the 'like units'. For instance x + 2x becomes 3x; 4a - 5a becomes -a etc.
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Because 9x - 7x = 2x
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