Inverse Laplace using convocation therom

Question

L^-1(s/(s+1)(s+2)) by using convocation therom. 

 

Igot this in my exam I am pretty confused please help me

Answer 1

I'm  not sure about "convocation" theorem but if you use convolution Theorem, the original transfrom can be expressed as Dirac Delta function as 2δ'(t)+3δ''(t)+ δ'''(t).