Show Intro/ Instruction If f(x) = 2x?

I can't seem to find the derivatives of these problems, I've tried using the chain rule, but the answer's still wrong. I am also not sure on how to do the tangent line problems, I can't really seem to apply the formula with the given equation. Please show with way.

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Show Intro/ InstructionIf f(x) = 2x? - 2x + 5, find f'( - 3).PreviewUse this to find the equation of the tangent line to the parabola y = 2x2 - 2x + 5 at the point ( - 3, 29). The equation of this tangent line can be written in the form y = mx + bwhere m is:Previewand where b is:PreviewGet help: VideoPoints possible: 1LicenseThis is attempt 1 of 2.Message instructor about this questionPost this question to forum