Find the expansion of (r+ 4)</I>3

I have the hardest time ever with this topic. I need a good, clear explanation on how to expand these (for someone who's an apparent math moron).

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- Jul 19th 2007, 12:26 PMBlueStarExpanding Binomials
Find the expansion of (

*r*+ 4)</I>3

I have the hardest time ever with this topic. I need a good, clear explanation on how to expand these (for someone who's an apparent math moron). - Jul 19th 2007, 12:35 PMred_dog
Do you mean ?

- Jul 19th 2007, 05:08 PMSoroban
Hello, BlueStar!

Quote:

Find the expansion of: .

*mutliply it out . . .*

First, find

. .

The multiply by another

. .

If you are seeking a shortcut to this type of multiplication,

. . then you want the Binomial Theorem (or Binomial Expansion).

Perhaps someone will explain it to you . . . or not.