Derivative of x*sqrt7-2x

1. Differentiate $- 2 x + \sqrt{7} x$ term by term:

   1. The derivative of a constant times a function is the constant times the derivative of the function.

      1. Apply the power rule: $x$ goes to $1$

      So, the result is: $\sqrt{7}$

   2. The derivative of a constant times a function is the constant times the derivative of the function.

      1. Apply the power rule: $x$ goes to $1$

      So, the result is: $-2$

   The result is: $-2 + \sqrt{7}$

The answer is:

$$-2 + \sqrt{7}$$