# How do you find the binomial expansion of #(x + y)^7#?

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George C.
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Aug 31, 2015

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Use the Binomial Theorem and Pascal's triangle to find:

#### Explanation:

The Binomial Theorem tells us:

where

So in our case:

These

Each number is formed by adding the two numbers above to the left and right.

The last row gives us the coefficients we need:

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