Step-by-step solution for this inverse laplace transformation?

Questions
1

When I put inverse laplace transform [1/(s⁴+2s²+1)] in W|A Pro to know step-by-step solution, It says “Oops, we can’t”. Who knows methods of solving this trouble? Help me…

2

Does this question have a problem?

3

Hi Hong

We are trying to keep titles as short and informative as possible. Thank you.

4

Pray for your good luck! Be careful for COVID-19! Thank you for reply.