There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ (2 + x)ln(2 + x) - x\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 2ln(x + 2) + xln(x + 2) - x\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 2ln(x + 2) + xln(x + 2) - x\right)}{dx}\\=&\frac{2(1 + 0)}{(x + 2)} + ln(x + 2) + \frac{x(1 + 0)}{(x + 2)} - 1\\=&\frac{x}{(x + 2)} + ln(x + 2) + \frac{2}{(x + 2)} - 1\\ \end{split}\end{equation} \]

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