chain rule

[Dorian Gray]

Hello once again mathematicians,

I am having some difficulties with this problem (1+4x)^5 multiplied by ((-x^2)+x+3)^8

I attached my work in the two photos. I have more than half of the answer right. It is not until the very end that I am having issues.





Any help, suggestions, or tips are always appreciated

 

[Dorian Gray]

As I was looking over the picture a second time, I actually caught my mistake in the first line. I tried to delete the post but could not find how to.