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# Pure 2 Chapter 4 - Binomial Expansion

Designed to accompany the Pearson Pure Mathematics Year 2/AS textbook.

## Mr A Blackett

### 12th Jul 2022 Flag Comment

Slide 5: The given formula at the top is something of a mishmash of the Y12 and Y13 version of the Binomial expansion. It suggests that the expansion is finite - because it has a last term and also that the nCr formula can be used when n is not a natural number - it can't.

## Ms C Tudo

### 10th Dec 2020 Flag Comment

slide 14 4th question coefficient should be 1/125

## Mr V Van Pelt

### 3rd Jun 2019 Flag Comment

slide 6 - never mind, i see what you mean here - MAY BE infinite as it will be finite for n in Natural numbers

## Mr V Van Pelt

### 3rd Jun 2019 Flag Comment

slide 6 - isn't it more correct to say that the expansion IS an infinite number of terms?

## P Lomax

### 9th Mar 2019 Flag Comment

Slide 6, a) 4th term power should be 3 not 4

## P Lomax

### 9th Mar 2019 Flag Comment

Slide 4, (1+2x)^4 power should be to the 4 not 5

## D Bareau

### 1st May 2018 Flag Comment

Slide 14, quickfire first step, fourth answer should have 1/125 rather than 1/25 as coefficient I think. Superb slides. Thank you.

## Nanthy

### 17th Mar 2018 Flag Comment

Great site for students. If you do it in pdf form as well and if you add worksheets with solutions in every topics it will help a lot. Thanks.

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