Răspuns
a) 2020
b) -4025
c) 2015 (2015² + 1) - 2007 x 2009
Explicație pas cu pas:
a) 2018² - 2017 x 2018 - 2017 +2019 =
2018 x (2018 - 2017) - 2017 +2019 =
2018 x 1 -2017 + 2019 = 2018 - 2017 + 2019 = 2020
b) 2020² - 2022 x 2020 - 2007 + 2022=
2020 x (2020 - 2022) - 2007 + 2022=
2020 x (-2) - 2007 + 2022 =
- 4040 - 2007 + 2022 =
- 6047 + 2022= -4025
c) 2015³ - 2007 x 2008 - 2007 +2015 =
2015 (2015² + 1) - 2007 x (2008+1)=
2015 (2015² + 1) - 2007 x 2009
