Expand the first 3 terms in

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- Aug 6th 2010, 05:56 AMPunchBinomial Expansion
Expand the first 3 terms in

- Aug 6th 2010, 06:38 AMyeKciM
- Aug 6th 2010, 06:39 AMUnknown008
What you can do is treat it like this:

Then apply the formula to find the first three terms.

Taking a = 6

b = - (13x - 6x^2) - Aug 6th 2010, 06:45 AMPunch
that makes sense thanks

- Aug 6th 2010, 06:46 AMyeKciM
- Aug 6th 2010, 06:56 AMPlato
- Aug 6th 2010, 07:02 AMUnknown008
- Aug 6th 2010, 07:03 AMundefined
- Aug 6th 2010, 07:12 AMArchie Meade
- Aug 6th 2010, 07:16 AMSoroban
Hello, Punch!

This is a messy one . . . even with a good procedure.

Quote:

It is evident that the first three terms are:

. . . .

The "Trinomial Expansion" forms an array:

We want only the first four terms (reading from the top).

. . [The rest contain or higher powers.]

. .

. .

. .

. .

But check my work . . .*please!* - Aug 6th 2010, 07:20 AMyeKciM
or look at it like this

and so when doing u'll get

u can go further... but u get the idea :D

or am i wrong here :D ? - Aug 6th 2010, 07:38 AMundefined
- Aug 6th 2010, 07:42 AMundefined
- Aug 6th 2010, 07:50 AMyeKciM

hmmmm :D

probably lost in translation, but if u look at then first one should be :

and so on...

but probably i'm little (or a lot) of with meaning of "terms" for me it's like n-th member or something like that :D

Edit: Sorry, but now i'm little a bit of confused :D - Aug 6th 2010, 07:57 AMundefined