So, i know how to apply the FTC here directly. We just substitute 2x into sin(t^2+2) for t and multiply by derivative of 2x. However, I want to be able to show my work and go through the steps? Is there a way to do that cause im kinda confused on how to.

Something along the lines of:

Let G(x) be the antiderivative of sin(t^2+2) then G'(x) = sin(t^2+2)

Im kinda confused what to do after to show the notation?