Answer:
I don't know about this thing
<span> (3x</span>² <span>+ 8) - (2x</span>² <span>+ 1)
= </span>3x² + 8 - 2x² - 1
= 3x² - 2x² + 8 - 1
= x² + 7
Answer: c) 2x² - 2x + 4
Step-by-step explanation:
Answer:
13g
Step-by-step explanation:
10g + 8g = 18g
18g - 5g = 13g