Hi

this is indeed really hard

First: Quotient rule

----

(2x-7)' = 2 =: u'

Product rule (u*v)' = u'*v + v'*u

and so on...

But it is much easier, if you multiply (x+2)(2x-7) first. Then you only must use the quotient rule

quotient rule:

here: u= x-2 => u'=1

...

I dont know. Maybe someone else does

Rapha