# How do you use the Binomial Theorem to expand #(x + 1)^4#?

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To use the binominal theorem we must know what Pascals triangle is because it gives us the binominal coefficients.

Note that the top "1" is considered row *no 0* by convention.

So to get our coefficients we go to the 4th row and get our seqence of

that means that we will have to multiply each x with the corresponding value from the sequence.

In our answer we can see this:

All the numbers are the same as our sequence (but the "1's" have been removed in the answer since

the next thing to do is to raise our

It all becomes much more evident if we exchange the

giving us:

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