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)
