Respuesta :
add the x^3:- 6 x3 + 3x3 = 9x3
x's:- -8x + 6x = - 2x
-5 + 2 = -3
the first choice is the correct one
x's:- -8x + 6x = - 2x
-5 + 2 = -3
the first choice is the correct one