Answer:
Choice A
Step-by-step explanation:
I would recommend starting off by using the distributive property.
(7x + 5)(2x³ - 4x² + 9x - 3) = 7x(2x³ - 4x² + 9x - 3) + 5(2x³ - 4x² + 9x - 3)
then simplify
= (14x^4 - 28x³ + 63x² - 21x) + (10x³ - 20x² + 45x - 15)
Now add it all together
= 14x^4 - 18x³ + 43x² + 24x - 15
The answer is choice A
