Respuesta :

You've chosen the correct answer ~
(4x^3 + 3x^2 - 6x) - (10x^3 + 3x^2)
4x^3 + 3x^2 -6x - 10x^3 - 3x^2
+3x^2 and - 3x^2 // cancel out
-6x^3 - 6x <- Answer