1. The problem statement, all variables and given/known data Write the expression i2i in the form a + bi 2. Relevant equations Honestly we haven't treated such subjects during the classes, but I've made some researches and found the Euler identity might help me. 3. The attempt at a solution By using the Euler identity, I found that i = ei.(π/2), so i2i = e-π (I skip a few steps). Now this looks great! But it is not in the form a + bi, as the problem requires. Any idea? Thank you very much in advance for your answers. PS: Next question is the same for (-1 + i)(1-i) J.