Answer:
don't know sorry babe
Step-by-step explanation:
Answer:
C. 42x² - 3x - 9
Step-by-step explanation:
Area:
(7x + 3) (6x - 3)
7x(6x - 3) + 3(6x - 3)
42x² - 21x + 18x - 9
42x² - 3x - 9
Answer:
D. 
Step-by-step explanation:

Simply subtract the two functions from each other and simplify to get the result.