Răspuns :
2025^2019 - 2024 x 2025^2018 =
2025^2018 x (2025 - 2024 x 1) =
2025^2018 x 1 =
2025^2018
[tex]\it 2025^{2019}-2024\cdot2025^{2018} =2025^1\cdot2025^{2018}-2024\cdot2025^{2018}=\\ \\ =2025^{2018}\cdot(2025-2024)=2025^{2018} \cdot 1=2025^{2018}[/tex]