College Algebra
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Evaluate the expression.
124!\frac{12}{4!}4!12
9!7!\frac{9!}{7!}7!9!
16!12!⋅4!\frac{16!}{12!\cdot4!}
Write the first 4 terms of the sequence an=n2⋅(n−1)!a_{n}=n^2\cdot\left(n-1\right)!
5:22
