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

Toán Lớp 6: 7 mũ 8 : 49 2 mũ 8 : 16 5 mũ 8 : 125

Toán Lớp 6: 7 mũ 8 : 49
2 mũ 8 : 16
5 mũ 8 : 125

Comments ( 2 )

  1.  
    Lời giải và giải thích chi tiết:
    Công thức : $a^{m}:a^{n}=a^{m-n}$
    $7^{8}:49=7^{8}:7^{2}=7^{6}$
    $2^{8}:16=2^{8}:2^{4}=2^{4}$
    $5^{8}:125=5^{8}: 5^{2}=5^{6}$

  2. $7^8:49=7^8:7^2=7^6$
    $2^8:16=2^8:2^4=2^4$
    $5^8:125=5^8:5^3=5^5$

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

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