Add or subtract.
(5x2 + x – 3) – (–2x3 + 4)
A. –2x3 + 5x2 + x – 7
B. –2x3 + 5x2 + x + 1
C. 2x3 + 5x2 + x – 7
D. 2x3 + 5x2 + x + 1
The expression (5x2 + x – 3) – (–2x3 + 4) can be simplified as follows:
= 5x2 + x - 3 + 2x3 - 4 (Note: minus minus is plus)
= 2x3 + 5x2 + x - 7
Therefore, the answer is option A: –2x3 + 5x2 + x – 7.