Respuesta :

Answer:

=-2x^3 + 14x^2 - 12x - 16

Step-by-step explanation:

=(x^2 + -5x + -4)(-2x + 4)

=(x^2)(-2x) + (x^2)(4) + (-5x)(-2x) + (-5x)(4) + (-4)(-2x) + (-4)(4)

=-2x^3 + 14x^2 + 10x^2 - 20x + 8x - 16

=2x^3 + 14x^2 - 12x - 16