Respuesta :

michellebalentine89

Answer:

(9x2 + 4x - 6) + (5x3 + 2x2 - 2x - 5) = 5x3 + 11x2 + 2x - 11

So, if, say 9 - 5 = 4, 9 - 4 = 5, right?

(5x3 + 11x2 + 2x - 11) - (5x3 + 6x2 + x - 16) = 5x2 + x + 5

Step-by-step explanation:

hope this helps sir! :D