Answer:
[C] 16
Explanation:
= 7x + 8 + −7x + 8
= (7x + −7x) + (8 + 8)
= 16
Step-by-step explanation:
Answer: 7
3x² + 8x - 9
8x² - 5x² +x+7x-10+1
=3x² + 8x - 9