Question
Fill in the blanks.The coefficient of the fourth term of the expansion of $(a+b)^{9}$ is $9 !$ divided by $3 !(-\quad) !$
Step 1
Step 1: The general formula for the coefficient of the kth term in the expansion of $(a+b)^n$ is given by $nCk = \frac{n!}{k!(n-k)!}$. Show more…
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