[ SPM Add Maths Dfferentiation Question ]

May I know how to do (b)?

This is the answer:


Differentiate each of the following functions with respect to x.
Bezakan setiap fungsi yang berikut dalam sebutan x.
(a) y=x^3(2x-3)^4
(b) y=4x(5-6x)^5
(c) y=(3x-2)^{11}(2x^2-7)^{12}


Hello some random person who wants 12A ; )
I believe the answer given is incorrect.