x Turn on thread page Beta
 You are Here: Home >< Maths

# Binomial question watch

1. basically the question is

expand
(1+2x) power of 5 (1-0.5x) power of 8 as far as the term in x power of 2,
what is it asking me? Is it asking me to expand both terms out to x2 and then expand it?
2. Have you got a picture you can insert?
3. (Original post by SunDun111)
basically the question is

expand
(1+2x) power of 5 (1-0.5x) power of 8 as far as the term in x power of 2,
what is it asking me? Is it asking me to expand both terms out to x2 and then expand it?
I'd suggest expanding both out to x^2 then expanding it again and ignoring all the terms that are above x^3 and above.
4. (Original post by Nowen)
Have you got a picture you can insert?
no its literally them two terms next to each other, and it says Expand this as far as the term in x to the power of 2
5. (Original post by Zacken)
I'd suggest expanding both out to x^2 then expanding it again and ignoring all the terms that are above x^3 and above.
I expanded them both out to x^2 but after that do you mean multiply them out with each other?
6. (Original post by Nowen)
Have you got a picture you can insert?
The question is:

Expand up to the term in
7. (Original post by SunDun111)
basically the question is

expand
(1+2x) power of 5 (1-0.5x) power of 8 as far as the term in x power of 2,
what is it asking me? Is it asking me to expand both terms out to x2 and then expand it?
The question isn't clear.. are they both multiplied together?
I mean like this:

(1+2x)5(1-0.5x)8 ?

If yes, then I would expand both brackets separately and then multiply your expansions together.
Are you aware of how to do binomial expansion, or would you like some help?
8. (Original post by SunDun111)
I expanded them both out to x^2 but after that do you mean multiply them out with each other?
Yes, multiply them out. Don't bother multiplying out the ones that make x^3 or x^4 though.
The question isn't clear.. are they both multiplied together?
I mean like this:

(1+2x)5(1-0.5x)8 ?

If yes, then I would expand both brackets separately and then multiply your expansions together.
Are you aware of how to do binomial expansion, or would you like some help?
Yeah thats the queston, I can do it quite well just going over it since im re-taking core 2
10. (Original post by SunDun111)
Yeah thats the queston, I can do it quite well just going over it since im re-taking core 2
I see, good luck! What exam board are you on. I'd expect that sort of question on C4 on OCR, although we did do binomials in C2 last year.
I see, good luck! What exam board are you on. I'd expect that sort of question on C4 on OCR, although we did do binomials in C2 last year.
AQA, first time i've seen that type of question but its in quite an old textbook not the new one so might be a bit outdated, thought i'd do it anyway.
12. (Original post by SunDun111)
AQA, first time i've seen that type of question but its in quite an old textbook not the new one so might be a bit outdated, thought i'd do it anyway.
Yes, it's always better to do more than less, I guess haha.

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: April 10, 2016
Today on TSR

### Loughborough better than Cambridge

Loughborough at number one

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams