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Ex 3 stiie cineva?e urgent vrg

Ex 3 Stiie Cinevae Urgent Vrg class=

Răspuns :

Z^2=(1-i)^2=1-2i+i^2=1-2i-1=-2i
Z^2=a+bi
a+bi=-2i
Re(z)=a=o
Im(z)=b=-2