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Calculati:
b)2019²-2018×2019

dau coroana si follow


Răspuns :

Răspuns:

2019²-2018×2019=2019

cu drag!!!!!

1.Prima operatie mereu e ridicarea la putere deci =4076361-2018×2019

2.Inmultirea =4076361-4074342

=2019

[tex]\it 2019^2-2018\cdot2019= 2019\cdot2019-2018\cdot2019=\\ \\ =2019\cdot(2019-2018)=2019\cdot1=2019[/tex]