Answer:
Step-by-step explanation:
The given question is incomplete: find the complete question in the attachment.
- In this question, problem was set up correctly in the box.
- There is a mistake in the second row of the box.
It should be x | -2x³ | x² | -5x
- Further calculations should be,
-2x³ + x² - 5x + 6x² - 3x + 15
= -2x³ + (x² + 6x²) + (-5x - 3x) + 15
= -2x³ + 7x² - 8x + 15
