Respuesta :
5x2 - 9x + 3 + 4x2 + 4x - 12
= 9x2 - 5x - 9
hope this helps (all I did was combine like terms)
= 9x2 - 5x - 9
hope this helps (all I did was combine like terms)
(5x² - 9x + 3) + (4x² + 4x - 12) = 5x² - 9x + 3 + 4x² + 4x - 12 = 9x² -5x - 9