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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 9: So sánh `A=(20^2021+11^2021)^2022` và `B=(20^2022+11^2022)^2021`

Toán Lớp 9: So sánh
A=(20^2021+11^2021)^2022 và B=(20^2022+11^2022)^2021

Comments ( 1 )

  1. Ta có: A=(20^2021+11^2021)^2022
    =(20^(2021)+11^(2021)).(20^(2021)+11^(2021))^2021
    =(20^(2021+2021)+20^(2021).11^(2021)+20^(2021).11^(2021)+11^(2021+2021))^2021
    =(20^(4042)+2(20^(2021).11^(2021))+11^(4042))^2021>B=(20^2022+11^2022)^2021
    Vậy A>B.

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222-9+11+12:2*14+14 = ? ( )

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