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

Toán Lớp 6: So sánh lũy thừa e) A = 6399 và B = 2665

Toán Lớp 6: So sánh lũy thừa
e) A = 6399 và B = 2665

Comments ( 1 )

  1. -Ta có: A = 6^(399) = (2.3)^(399) = 2^(399) . 3^(399)
                B = 2^(665) = 2^(399) . 2^(266)
     -Ta có: 3^399 > 2^266
            → 2^(399) . 3^(399) > 2^266 . 2^(399)
            → A > B
                           Vậy A > B
       

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