👤
Salamgiu
a fost răspuns

2X ( 1+2+3+....+ 2016) + 2017

Răspuns :

Andreea072
2×[(1+2016)×2016:2]+2017
2×(2017×2016:2)+2017
Îl reducem pe 2016 cu 2
2×(2017×1008)+2017
2×2033136+2017
4066272+2017
4068289
2(1+2+3+....+ 2016) + 2017=
=2·2016·2017:2+2017
=2016·2017+2017
=2017(2016+1)
=2017·2017
=2017²