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Calculati:
a)
[tex] {2019}^{2} - 2019 \times 2020[/tex]
b)
[tex] {2019}^{2} - 2018 \times 2019[/tex]
c)5+10+15+...+2020-5×(1+2+3+...+404)


Răspuns :

RASPUNS:

a) 4.076.361-2019x2020=
= 4.074.342x2020=
= 823.017.084e

b) 4.076.361-2018x2019=
= 4.074.343x2019=
= 8.226.098.517

c) nu il stiu, imi pare rau


Sper ca te-am ajutat!!