HOC24
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Bài học
Does the house behind the garden?
2.The notebook is under the pen.
3.She has long black hair.
4. Is there a house behind the garden?
The notebook is under the pen.
D
A=(1+2)+(2^2+2^3)+...+(2^2022+2^2023)
A=3+2^2.(1+2) +...+2^2022.(1+2)
A=3+2^2.3+...+2^2022.3
A=(1+2^2+...+2^2022)⋮3
=>A⋮3