There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ x + 5((5 - x(3 + x))x)\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 26x - 5x^{3} - 15x^{2}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 26x - 5x^{3} - 15x^{2}\right)}{dx}\\=&26 - 5*3x^{2} - 15*2x\\=& - 15x^{2} - 30x + 26\\ \end{split}\end{equation} \]

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