Respuesta :

Answer:

Step-by-step explanation:

Additive inverse of (5a² - 4a + 3) should be added to make them zero

(5a² - 4a + 3) + (-5a² + 4a - 3)=   5a² - 5a²  - 4a + 4a    + 3  - 3

                                              = 0