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Почему свет на рабочее место должен падать слева?

Ответ:

виктория2003141

05.06.2020 09:43

$(-3+i)^3=(-3)^3+3*(-3)^2i+3*(-3)i^2+i^3= \\ =-27+27i-9i^2+i^2*i=-27+9+27i-i=-18+26i$

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