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Binomial Theorem ... ?

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Fitness:
Has anyone actually seen this before? I came across it today when I was looking through the itute summary sheets.
[img]http://i180.photobucket.com/albums/x69/gourlaype/Binomial_Theorem.jpg[/img]

Would anyone use this to expand something such as (2x-1)^4 unless it asks you to in the exam?
This is the first time I have seen it and it seems logical but I'm not sure if I was supposed to learn it?

Toothpaste:
It's nice to know I guess.

If you look for the Pascal's triangle thread in this forum, you'll see that I learned it last week sometime LOL!

cara.mel:
I remember that my teacher never taught me that, but we needed to know how to do it on a technology-free SAC and I found that out on the day, so I learnt it about 30mins before the sac and soon afterwards forgot about it :)

I know in the essential books it lives in an appendix, I also never used it since then. You can just shove it in your book anyway, doesn't hurt.

kido_1:
Yes I would use the binomial theorem. Just include it in your reference material, with an example.

JL_91:
lol since the non-calculator exam is over now, i'd just use my calculator to expand it. we had to find a term in one of those by hand on the first SAC we did this year at my school

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