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

Toán Lớp 6: So sánh : `$8^{49}$` và `$15^{24}$`

Toán Lớp 6: So sánh : $8^{49}$ và $15^{24}$

Comments ( 2 )

  1. Ta có: 8^(49)=(2^3)^(49)=2^(147)
    mà 15^(24)<16^(24)
    16^(24)=(2^4)^(24)=2^(96)
    Mà 2^(147)>2^(96)
    ⇒8^(49)>15^(24)
     

  2. 8^49 = (2^3)^49 = 2^147
    15^24 < 16^24 = (2^4)^24 = 2^96
    Vì   2^147 > 2^96
    ⇒ 8^49 > 16^24 > 15^24
    ⇒ 8^49 > 15^24

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