Designed to accompany the Pearson Pure Mathematics Year 2/AS textbook.
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.
slide 14 4th question coefficient should be 1/125
slide 6 - never mind, i see what you mean here - MAY BE infinite as it will be finite for n in Natural numbers
slide 6 - isn't it more correct to say that the expansion IS an infinite number of terms?
Slide 6, a) 4th term power should be 3 not 4
Slide 4, (1+2x)^4 power should be to the 4 not 5
Slide 14, quickfire first step, fourth answer should have 1/125 rather than 1/25 as coefficient I think.
Superb slides. Thank you.
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.