1) Calculate: | (1+i)^2 / 3?4i|

2) Decompose the complex polynomial x^4 - 4 in linear factors

3)Find a complex polynomial of the form 2z^3 + a2z^2 + a1z + a0 with the

Zeros z1 = ?3, z2 = 2 + 2i and z3 = 2 - 2i.

4) Show that:

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