Is this a typo? Using Chain Rule and Product Rule

[opus]

Homework Statement

This isn't really a homework problem, as the entire solution is laid out in the text. My question is in regards to a possible typo, which I have highlighted in blue in the given picture.
Usually I don't like to second guess the text, but this one has been absolutely plagued by typos and I usually have to go to the professor to see if it really is a typo or if I missed something.

Homework Equations

The Attempt at a Solution

My solution is $h'(x) = (2x+1)^4(3x-2)^6(72x+1)$

 

[fresh_42]

Mine as well. The "7" and the "49" are wrong.

 

[opus]

Ok thank you fresh. Really hate having to deal with typos, but I'm sure they're hard to avoid when writing an 800 page book of numbers.