👤
a fost răspuns

d) (6+12+18+...+300)^3:(3+6+9+...+150)=

Răspuns :

[6(1+2+3+...+50)]^3:[3(1+2+3+...+50)]= [6(50×51:2)]^3:[3(50×51:2)]= 6^3×(25×51)^2:3= 72×(25×51)^2= 72×1275^2