I'm confused from one step to the next in the book.(adsbygoogle = window.adsbygoogle || []).push({});

In the first step, they have (n+1)!

then in the next step the write that as (n+1)n!

so (n+1)! = (n+1)n! ?

I don't understand that, can someone explain it to me ? ( I am very unfamiliar with factorials, this is like some of the first times I have seen it in computations.

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# Homework Help: Factorial in example problem, I'm confused

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