Answer:
B. 2x² + 3
Step-by-step explanation:
The given expression is
(3x² + 2x + 4) - (x² + 2x + 1)
To subtract the polynomials we need to write the expression without the parenthesis as
3x² + 2x + 4 - x² - 2x - 1
Now, we need to add the like terms
(3x² - x²) + (2x - 2x) + (4 - 1)
2x² + 0 + 3
2x² + 3
Therefore, the answer is
B. 2x² + 3