So sánh : 2020×2021/2020×2021+1 và 2021×2022/2021×2022+1
2 câu trả lời
Đáp án: đây nha bạn
Ta có:
2020+2021/2021+2022=2020/2021+2022 + 2021/2021+2022
mà 2020/2021>2020/2021+2022
2021/2022>2021/2021+2022
=> 2020/2021+2021/2022>2020/2021+2022 + 2021/2021+2022
=> 2020/2021+2021/2022>2020+2021/2021+2022
=> A>B
Vậy nên A>B.
Giải thích các bước giải:
Ta có:
2020+2021/2021+2022
=2020/2021+2022 + 2021/2021+2022
mà 2020/2021>2020/2021+2022
2021/2022>2021/2021+2022
=> 2020/2021+2021/2022>2020/2021+2022 + 2021/2021+2022
=> 2020/2021+2021/2022>2020+2021/2021+2022
=> A>B
Vậy nên A>B.
$\text{xin hay nhất}$
$\textit{@hairate2311}$
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