I have an equation and I want the equation of the tangent line at x = 2. I know what to do, but my math is wrong somewhere down the line.

Subbing in 2

Taking derivative and then plugging in 2

So, I use equation of a line now that I have the solutions for f(x) and m.... and I wind up with

I get the equation of the tangent line should be ,but this is incorrect, and I was hoping somebody could eyeball this if they get a chance because I think I'm going in circles trying to fix it.