Hi there!
Answer:
A. 7x² - 9x - 5
Step-by-step explanation:
If you simply take away the parentheses, you get:
3x² - 4x + 7 + 4x² - 5x - 12
Then, just add them all together, and you get:
Let me know if you have any questions!
add 3+4=7x². -4-5=-9x. 7-12=-5. Answer : A
