Answer & Step-by-step explanation:
First, we have to subtract 3x² + 4x - 5 from 7x² + x + 9. Then we subtract 4x² - 3x from that difference.
(7x² + x + 9) - (3x² + 4x - 5)
Distribute the negative sign (-) to 3x² + 4x - 5
7x² + x + 9 - 3x² - 4x + 5
Combine like terms
4x² - 3x + 14
Now, we are going to subtract 4x² - 3x from this difference.
(4x² - 3x + 14) - (4x² - 3x)
Distribute the negative sign (-) to 4x² - 3x
4x² - 3x + 14 - 4x² + 3x
Combine like terms
14
So, after subtracting the first two polynomials and then subtracting 4x² - 3x from that difference, the final answer will be 14