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Daca A=2017+2x(1+2+3+...+2016),atunci calculati A:2017
Urgentttttt!!!


Răspuns :

A=2017+2×(1+2+3+....+2016)

A=2017+2×(2016×2017)/2

A=2017+2016×2017

A=2017×(1+2016)

A=2017×2017

A=2017²

A:2017=

=2017²:2017=2017

Răspuns:

1+2+..+2016=[2016(2016+1)]:2=2016X2017

2017+(2X2016X2017):2=2017+2016X2017=2017(1+2016)=2017X2017=[tex]2017^{2}[/tex]

A:2017=2017

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