1.


















2.


















3.


















4.



1


0


i


-i





5 - 6. If a and b are complex numbers and a = 2 + 5i, and b = 1 - 3i, calculate:

a + b =

1 + i


5i


3 - 2i


3 + 2i




a·b=

12 + i


17 - i


17 + 11i


-13 - i





7. Find the solutions of the quadratic equation: x² - 2x + 2 = 0.

1 + i and 1 - i


-1 + i and -1 - i


1 + 2i and 1 - 2i


-1 + 2i and -1 - 2i





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