Step 1:
The Binomial Theorem states that for any real numbers x and y, and any nonnegative integer n, the expansion of $(x+y)^n$ is given by:
$$(x+y)^n = \sum_{k=0}^{n} \binom{n}{k} x^{n-k} y^k$$
where $\binom{n}{k}$ is the binomial coefficient, which is the number
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