[Routh table qusetion ]

Hi ,Guys this is book question,and i search the book text solution.

But the question is many solved. I don't know which answer is correct.

and I am confused.

please help me find the correct answer ,thx very much.

2. Tell how many roots of the following polynomial are in the right half-plane, in the left half-plane, and on the jo-axis: [Section : 6.3] P(s) 65s2+8s+20 3. Using the Routh table, tell how many poles of the following function are in te righ half-plane, in the left half-plane, and on the jo-axis. [Section: 6.3] T(s)