How to Simplify the Derivative of \( (1+4x)^5(3+x-x^2)^8 \)?

[realism877]

Homework Statement

(1+4x)^5(3+x-x^2)^8

Homework Equations

The Attempt at a Solution

I get to this point, but I don't know how to break it down.

5(1+4x)^4(4x)(3+x-x^2)^8+8(3+x-x^2)(1-2x)

 

[dextercioby]

The multiplication and the chain rules must be both applied. Your computations either forgot one of the 2, or used them wrongly.

Please, check again.

And BTW, you can use LaTeX to write down your formulas in an elegant and comprehensible fashion. Just type the standard code between the \, \mbox{and} \, tags.