Derivative of y=x³+2x-1

1. Differentiate $x^{3} + 2 x - 1$ term by term:

   1. Apply the power rule: $x^{3}$ goes to $3 x^{2}$

   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: $2$

   3. The derivative of the constant $\left(-1\right) 1$ is zero.

   The result is: $3 x^{2} + 2$

The answer is:

$$3 x^{2} + 2$$