GCSE Maths Tutor no.4 question algebraic substitution

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Uploaded by on May 27, 2007

GCSE maths 2006 higher paper 6 version 1 Q4
a question on simple algebra

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  • I always get a bit confused on these questions because I'm not sure when to stop. So, not only must you state that the example answer 10 was Prime, but also say why its not? I would have just said 10 is not a prime number therefore the pupil is wrong.

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  • Why did you minus an additional 2 off?

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