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expand out the bracket (2m - 3)(m + 1).

claw technique: multiply each 'thing' in the first bracket with each 'thing' in the second bracket.2m² + 2m - 3m -3then collect the like terms2m² -1 -3

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expand out the bracket (2m - 3)(m + 1).

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The ratio of Adam's age to Bob's age is 1:2. In 12 years time, the ratio of their ages will be 3:5. Calculate their current ages.

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factorise: 3x^2+13x-30

1/7 + 5/3x

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