Answer:
A.30x3-3x2-24x+9
Step-by-step explanation
1. Separate the terms in g(x). (6x) (-3)
2. Distribute by multiplying each term in f(x) by (6x).
(6x)(5x2+2x-3)=30x3+12x2-18x
3. Distribute the other term in g(x) to each term in f(x).
(-3)(5x2+2x-3)= -15x2-6x+9
4. Combine the like terms of both answers.
30x3+12x2-18x-15x2-6x+9= <em><u>30x3-3x2-24x+9</u></em>