There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ (x - 3 - m){(12 - x)}^{2}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = x^{3} - 27x^{2} + 216x - mx^{2} + 24mx - 144m - 432\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( x^{3} - 27x^{2} + 216x - mx^{2} + 24mx - 144m - 432\right)}{dx}\\=&3x^{2} - 27*2x + 216 - m*2x + 24m + 0 + 0\\=&3x^{2} - 54x - 2mx + 24m + 216\\ \end{split}\end{equation} \]

Your problem has not been solved here? Please take a look at the  hot problems ！