Step 1:
The $n$th term in the expansion of a binomial $(a+b)^n$ is given by the formula:
$$T_{k} = ^nC_{k-1} \cdot a^{n-k+1} \cdot b^{k-1}$$
where $^nC_{k-1}$ is the binomial coefficient, $a$ and $b$ are the terms of the binomial, and $k$ is the term number.
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