Question

2023²-2022.2023

^{Tính nhanh: 23+(27-7.6)-(94.7-27.99)}

Answer 1

2003² - 2002.2003

= 2003.(2003 - 2002)

= 2003 . 1

= 2003

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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

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23 + (27 - 7.6) - (94.7 - 27.99)

= 23 + 27 - 42 - 658 + 2673

= 23 + (27 + 2673) - (42 + 658)

= 23 + 2700 - 700

= 23 + 2000

= 2023

Answer 2

`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`

Answer 3

\(2023^2-2022.2023\)

\(=2023\left(2023-2022\right)\)

\(=2023.1\)

\(=2023\)

\(23+\left(27-7.6\right)-\left(94.7-27.99\right)\)

\(=23+27-7.6-94.7+27.99\)

\(=23+\left(27+27.99\right)-\left(7.6+94.7\right)\)

\(=23+27\left(1+99\right)-7.\left(6+94\right)\)

\(=23+27.100-7.100\)

\(=23+2000\)

\(=2023\)