Assignment:
Q1. Assume that Joe take 6 hours working alone and Sam takes 8 hours working alone, how long does it take the, to do it together?
Q2. (1 +3i) (2-5i)
Q3. i(3-4i) (6+4i)
Q4. 14 + 5i divided by 3 +2i
Q5. 5 divided by 9i
Provide complete and step by step solution for the question and show calculations and use formulas.