Respuesta :

Answer:

(x - 8)(x + 5)

Step-by-step explanation:

First we should spilt the middle term

x² - (8x - 5x) - 40

Then we should remove the brackets

x² - 8x + 5x - 40

Then we will take (x - 8) as common

x(x - 8) + 5(x - 8)

Now, at last grouping them

(x - 8)(x + 5)