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**cooljackiec****Member**- Registered: 2012-12-13
- Posts: 185

help:

I see you have graph paper.

You must be plotting something

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**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,496

Hi;

By the binomial theorem or Pascals triangle

Now just substitute for a and b

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

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**cooljackiec****Member**- Registered: 2012-12-13
- Posts: 185

thanks

I see you have graph paper.

You must be plotting something

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**cooljackiec****Member**- Registered: 2012-12-13
- Posts: 185

what is the coefiicencient of

inI see you have graph paper.

You must be plotting something

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**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,496

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

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**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 7,938

hi cooljackiec

The term with c^3 will be

The term in (a+2b)^3 with ab^2 will be

So the coefficient you want will be:

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

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**noelevans****Member**- Registered: 2012-07-20
- Posts: 236

Hey cooljackiec!

You might google "multinomial coefficients" and check out some of the sites to see how to easily

obtain the coefficient of the ab^2c^3 term in (a+2b+3c)^6. I'm guessing that that is where bobbym

got his answer.

Writing "pretty" math (two dimensional) is easier to read and grasp than LaTex (one dimensional).

LaTex is like painting on many strips of paper and then stacking them to see what picture they make.

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