Pure 2 chapter 4

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Binomial expansion

4 Terms

1
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Binomial expansion formula for fractional or negative numbers

(1+x)n = 1 + nx + n(n-1)/2! + n(n-1)(n-2)/3!

2
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Where is binomial expansion for (1+x)n valid

|x|<1 and nER

3
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Where is binomial expansion for (a+bx)n valid

|x|<a/b

4
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