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a fost răspuns

cum se rezolva ecuatile
x+2x+3x+...+100x=-5050

Răspuns :

YuLiSsA
x+2x+3x+....+100x=-5050
x(1+2+3+...+100)=-5050
x·[tex] \frac{100*101}{2} [/tex]=-5050
x·50·101=-5050
5050x=-5050
x=-1