Convert complex numbers to trigonometric form and then simplify the expression. Write the answer in standard form. 
Definitions:
Dance Class
A structured session where individuals learn and practice dance moves under the guidance of a dance instructor.
Waltz
A ballroom and folk dance in triple time, often associated with elegant and graceful movements.
Merengue
A style of fast-paced, rhythmic Latin American music and dance originating from the Dominican Republic.
Old Friend
A person with whom one has had a friendship for a long time, often sharing many past experiences.
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