Binomial Theorem - Pre-Calculus 12 - Mid term of [a-(3b^3]^8 and term with x^11 in (x^2- 1/x)^10

Binomial Theorem - Pre-Calculus 12 – Page: 543
Chapter 11.3

Question #: 18.
a) Determine the middle term in the expansion of ( a -〖3b〗^3 )^8.
b) Determine the term containing x^11 in the expansion of (x^2- 1/x)^10.