Answer:
(4x² + 9x - 7) - (7x² + 5x - 1) = -3x² + 4x - 6
Step-by-step explanation:
(4x² + 9x - 7) - (7x² + 5x - 1)
Group like terms together.
(4x² - 7x²) + (9x - 5x) - (7 - 1)
Subtract 7x² from 4x².
-3x² + (9x - 5x) - (7 - 1)
Subtract 5x from 9x.
-3x² + 4x - (7 - 1)
Subtract 1 from 7.
-3x² + 4x - 6
