Binomial Expansion - finding a term or coefficient : tutorial 3 : ExamSolutions

In this tutorial you are shown how to find a particular term or coefficient of a term in a binomial expansion without having to resort to the full expansion.

For this and more maths revision videos on the binomial expansion, other topics and worked solutions to maths past papers goto ExamSolutions at http://www.examsolutions.co.uk

Category:

Education

Tags:

• binomial
• expansion
• past
• papers
• examsolutions
• exam solutions
• A-level
• maths
• revision

[LadyAfreakaa]

is the 5th term of (5-2x)^8 the same as the term in x^5 ?

[ExamSolutions]

@LadyAfreakaa No. The 5th term would be in x^4

[AmyyDunlap]

how do you do the NcR without a calculator?

[ExamSolutions]

@AmyyDunlap Just use the formula nCr = n! / (n-r)! r!

[randomer411]

What is C?

[ExamSolutions]

@randomer411 C is the combination function. Just go on my website and look in the index for nCr

[ExamSolutions]

@jakey239 Maybe if someone would pay me.

[SmasherVlog]

Thank you so much! My European IB Math book sucks so it's kinda ironic that you're European

[XStephianneX]

thank you =]

[Area51Blog]

awesome tutorial....excellent way of explaining