1. The problem statement, all variables and given/known data Sorry I don't have equation editor working 1/(z+1)(z2 + 2z + 2) 2. Relevant equations 3. The attempt at a solution (z2 + 2z + 2) z2 + 1) can be factor as (z - i)(z + i) However, I'm having trouble seeing the pattern on what (z2 + 2z + 2) would become, I tried guessing and checking but haven't found anything that works... I can't find a value for z that would make that equation 0.