Answer:
Part A
(5x+4)+(6x-9)=11x-5
part (B)
(5x+4)(6x-9)
30x²-45x+24x-36
30x²-21x-36
part (c)
m[n(x)]=m(6x-9)+4=30x-45+4=30x-41
Step-by-step explanation:
