I'd say option D because you can just tell right off the bat that if x = 0, then f(x) = 43.75.
Answer:
Step-by-step explanation:
Ugh, these questions.
21x^3y^4 + 15x^2y^2 - 12xy^3
3xy^2 (7x^2y^2 + 5x - 4y)
Clearing up clutter...
3xy² (7x²y² + 5x - 4y)
That's your answer. Thanks for working my brain. ;)