Răspuns :
Răspuns:
2018²-2018-2017=2018·(2018-1)-2017=2018·2017-2017=2017·(2018-1)=
2017·2017=2017² este pp
2018²-2018-2017=
=2018(2018-1)-2017=
=2018×2017-2017=
=2017×(2018-1)=
=2017×2017=2017² este patrat perfect
Răspuns:
2018²-2018-2017=2018·(2018-1)-2017=2018·2017-2017=2017·(2018-1)=
2017·2017=2017² este pp
2018²-2018-2017=
=2018(2018-1)-2017=
=2018×2017-2017=
=2017×(2018-1)=
=2017×2017=2017² este patrat perfect