2003² - 2002.2003
= 2003.(2003 - 2002)
= 2003 . 1
= 2003
-------------------
7(x - 2) + 2³ = 2.5²
7(x - 2) + 8 = 2.25
7(x - 2) = 50 - 8
7(x - 2) = 42
x - 2 = 42 : 7
x - 2 = 6
x = 6 + 2
x = 8
-------------------
23 + (27 - 7.6) - (94.7 - 27.99)
= 23 + 27 - 42 - 658 + 2673
= 23 + (27 + 2673) - (42 + 658)
= 23 + 2700 - 700
= 23 + 2000
= 2023
`2023^2-2022.2023`
`=2023.2023-2022.2023`
`=2023.(2023-2022)`
`=2023.1`
`=2023`
__
` 23 + (27 - 7.6) - (94.7 - 27.99)`
` = 23 + (27 - 42) - (658 - 2673)`
` = 23 + (-15) - (-2015)`
` = 8 + 2015`
` = 2023`
\(2023^2-2022.2023\)
\(=2023\left(2023-2022\right)\)
\(=2023.1\)
\(=2023\)
\(23+\left(27-7.6\right)-\left(94.7-27.99\right)\)
\(=23+27-7.6-94.7+27.99\)
\(=23+\left(27+27.99\right)-\left(7.6+94.7\right)\)
\(=23+27\left(1+99\right)-7.\left(6+94\right)\)
\(=23+27.100-7.100\)
\(=23+2000\)
\(=2023\)
