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# C2 Maths- Binomial Expansion Plesae help if you can watch

1. Hi im really stuggling with this question, any help would be much appriciated:
For the binomial expansion, in descending powers of x, of

(x^3-1/2x)^12,

a) find the first 4 terms, simplifying each term

b) Find in its simplest form, the tem independant of x in this expansion

thanks in advance for ANY help
2. Ok, what do you know?
nCr familiar?
3. (Original post by beccajonesy)
Hi im really stuggling with this question, any help would be much appriciated:
For the binomial expansion, in descending powers of x, of

(x^3-1/2x)^12,

a) find the first 4 terms, simplifying each term

b) Find in its simplest form, the tem independant of x in this expansion

thanks in advance for ANY help
Do you mean
4. (Original post by steve2005)
Do you mean
yes thats it, but how do you solve, it i know that you need to get it into the form (1+x)n but how do you do that with such arkward numbers
5. (Original post by dexter -1)
Ok, what do you know?
nCr familiar?
Yes, i am But do you not need to get it into the form (1-ax)n ???
6. You don't need to get it in the form .

Can you write down the first four terms in the expansion ?

If so, let and .
7. have you tried to re write the the 1/2x?

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