Question

List the possible rational roots and actual rational roots for the equation x^3 - 5x^2 - 4x + 20 = 0

Answer 1

The possible rational roots are

±

1

,

±

2

,

±

4

,

±

5

,

±

10

,

±

20

. The rational roots are

x

=

−

2

,

x

=

2

,

x

=

5

.

Explanation:

Answer 2

The answer is:

D.

EDGE 2020