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

Toán Lớp 7: 2021-(1 phần 3) mũ 2 nhân 3 mũ 2 bằng máy

Toán Lớp 7: 2021-(1 phần 3) mũ 2 nhân 3 mũ 2 bằng máy

Comments ( 2 )

  1. 2021-(1/3)^{2}.3^2
    =2021-1/(9).9
    =2021-(9)/(9)
    =2021-1
    =2020
     

  2. 2021 – ( 1/3)^2 . 3^2
    = 2021 –  ( 1/3 . 3)^2
    = 2021- 1^2
    = 2021 – 1
    = 2020
     #caty09

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

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