I have the following exponential equation
(x^3 + 2)(x^2 + X)
Find the equation of the tangent line when x=1
This is what I do to get the derivative
(3x^2)(x^2 + x) + (2x + 1)(x^3 + 2)
When I factor this out I get an answer that includes x^4 and x^3 and x^2 yet the answer for the equation of the line is 15x-9.
Where am I going wrong? I am really lost on tangent line equations.