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

Toán Lớp 6: Viết gọn các tích sau bằng cách dùng lũy thừa: A, 2.5.8.25.100 B, 3.5.8.25.100

Toán Lớp 6: Viết gọn các tích sau bằng cách dùng lũy thừa:
A, 2.5.8.25.100
B, 3.5.8.25.100

Comments ( 2 )

  1. A, 2.5.8.25.100
    =2.5.2.2.2.5.5.2.2.5.5
    =$2^{6}$ .$5^{5}$ 
    B, 3.5.8.25.100
    =3.5.2.2.2.5.5.2.2.5.5
    =$2^{5}$ .3.$5^{5}$ 
     

  2. a ) 2 . 5 . 8 . 25 . 100
    = 2 . 5 . 2^3 . 5^2 . 2^2 . 5^2
    = 2 . 5 . 2 . 2 . 2 . 5 . 5 . 2 . 2 . 5 . 5
    = 2^6 . 5^5
    b ) 3 . 5 . 8 . 25 . 100
    = 3 . 5 . 2^3 . 5^2 . 2^2 . 5^2
    = 3 . 5 . 2 . 2 . 2 . 5 . 5 . 2 . 2 . 5 . 5
    = 3 . 2^5 . 5^5
    = 3 . ( 2 . 5 )^5
    = 3 . 10^5
    #dtkc

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

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