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Stie cineva cum se rezolva??? Mersi

Stie Cineva Cum Se Rezolva Mersi class=

Răspuns :

1)
(4+3i)/(5+2i)=(4+2i)(5+2i)/(5-2i)(5+2i)=(20+8i+15i+6i^2)/(25-4i^2)=(14+23i)/29
i^2=-1.
2)
sqrt=radical
5sqrt32=5*16sqrt2=80sqrt2
3sqrt8=3*4sqrt2=12sqrt2
(80sqrt2+12sqrt2+10sqrt2):srqt2=112sqrt2:sqrt2=112