Answer: plus or minus 1, 1/2, 2, 5, 5/2, and 10
Explanation:
To find the possible roots
We first find the factor of the constant term:
10: 1, 2, 5, 10
Then we find the factor of leading coefficient:
2: 1, 2
And the possible rational roots are:
Plus or minus [1/1, 1/2, 2/1, 2/2, 5/1, 5/2, 10/1, 10/2]
Then we get rid of the duplicate:
Plus or minus [1, 1/2, 2, 5, 5/2, 10]
