Question

D?

Answer 1

first list all the factors of the constant (20) and then all the factors of the leading coefficient (2)

Answer 2

then all your possibilities are every combination of (constant factor)/(leading coefficient factor)

Answer 3

I know that the roots are -5/2,-2,2

Answer 4

So either D or A

Answer 5

or B

Answer 6

-5/2 is not included in D

Answer 7

B

Answer 8

good (be sure to learn the proper method though)