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

Toán Lớp 7: 3^7×8^2/6^5×(-9)^2 Nhanh nhé mik đang cần gấp lắm

Toán Lớp 7: 3^7×8^2/6^5×(-9)^2
Nhanh nhé mik đang cần gấp lắm

Comments ( 2 )

  1. (3^{7}.8^2)/(6^{5}.(-9)^2)
    =(3^{7}.2^6)/(2^{5}.3^{5}.(-3)^4)
    =2/((-3)^2)
    =2/9
     

  2. (3^(7).8^2)/(6^(5).(-9)^2)
    =(3^(7).(2^3)^2)/((2.3)^(5).9^2)
    =(3^(7).2^6)/(2^(5).3^(5).(3^2)^2)
    =(3^(7).2^6)/(2^(5).3^(5).3^4)
    =(3^(7).2^6)/(2^(5).3^9)
    =2/3^2
    =2/9

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