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# Check if this is correct! watch

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1. Sorry, a bit of a click bait title with the capitals. Can someone check if this explanation is correct? Maths question -80% of those who clicked lost at this point. Thanks

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2. Wasn't expecting this level of interest lmao

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3. yh
4. (Original post by Moltenmo)
Sorry, a bit of a click bait title with the capitals. Can someone check if this explanation is correct? Maths question -80% of those who clicked lost at this point. Thanks

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That looks fine. However, the proof would have worked much more neatly if you used and as your consecutive numbers. You'd end up with , which is more explicit in showing the required result.
5. (Original post by kingaaran)
That looks fine. However, the proof would have worked much more neatly if you used and as your consecutive numbers. You'd end up with , which is more explicit in showing the required result.
Ahh thank you! One question I have. Is it better to use 2n and 2n+1 as the consecutive numbers as opposed to n and n+1 in proof questions? Or was it only better in this scenario?

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6. (Original post by Moltenmo)
Ahh thank you! One question I have. Is it better to use 2n and 2n+1 as the consecutive numbers as opposed to n and n+1 in proof questions? Or was it only better in this scenario?

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Providing there are no other conditions to the consecutive numbers of course.

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7. (Original post by Moltenmo)
Ahh thank you! One question I have. Is it better to use 2n and 2n+1 as the consecutive numbers as opposed to n and n+1 in proof questions? Or was it only better in this scenario?

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Hmm, it depends on what you're trying to show it is a multiple of. Here we wanted a multiple of 4, so I realised that because we have squares, we may as well use , as when squared, that'll give us the factor of 4 we want.

However, using and will result in larger coefficients, which given the nature of questions you're likely to get, will probably make the proofs come out a lot easier / nicer.
8. (Original post by kingaaran)
Hmm, it depends on what you're trying to show it is a multiple of. Here we wanted a multiple of 4, so I realised that because we have squares, we may as well use , as when squared, that'll give us the factor of 4 we want.

However, using and will result in larger coefficients, which given the nature of questions you're likely to get, will probably make the proofs come out a lot easier / nicer.
That makes sense. Thank you.

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Updated: January 3, 2017
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