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

Toán Lớp 7: Giúp đi đề 27 mủ 4 :9 mủ 4

Toán Lớp 7: Giúp đi đề 27 mủ 4 :9 mủ 4

Comments ( 2 )

  1. 27^{4}:9^4
    =(3^3)^{4}:(3^2)^4
    =3^(12):3^8
    =3^{12-8}
    =3^4
    =81
     

  2. 27^4 : 9^4
    = (3³)^4 : (3²)^4
    = 3^(12) : 3^8
    = 3^(12 – 8)
    = 3^4
    = 81

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

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