Question

Factor by grouping:
8p3 - 64p2 + 5p - 40


(8p2 + 5)(p - 8)


(8p + 5)(p - 8)


(8p2 + 5)(p2 - 8)


(8p + 5)(p2 - 8)

Answer 1

like a first step from first and second term factoriz out 8p^2

ok ?

Answer 2

so and from 3rd and 4rd term factoriz out 5 than check what you will get

Answer 3

8p3-64p2+5p-40
(8p3-64p2)+(5p-40)
8p2(p-8)+5(p-8)
(8p2+5)(p-8)