How can I differentiate this function?

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I am stuck with this problem, please help me.

I have to differentiate the function:

$y = \frac{x^{n+1}}{n+1} (\ln {x} - \frac{1}{n+1})$

The solution is $x^n \ln{x}$.

I just can't understand the process of getting the solution.

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Just use the product rule: $$\frac{dy}{dx} = \frac{d}{dx}\left(\frac{x^{n+1}}{n+1}\right)\cdot\left(\ln x - \frac{1}{n+1}\right) + \frac{x^{n+1}}{n+1}\cdot\frac{d}{dx}\left(\ln x - \frac{1}{n+1}\right).$$