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

Toán Lớp 6: Tính bằng 2 cách:11 mũ 3 chia 11 mũ 2 ,16 mũ 2 chia 4 mũ 2 ,25 mũ 2 chia 5 mũ 2 ,

Toán Lớp 6: Tính bằng 2 cách:11 mũ 3 chia 11 mũ 2 ,16 mũ 2 chia 4 mũ 2 ,25 mũ 2 chia 5 mũ 2 ,

Comments ( 2 )

  1. 11 mũ 3 chia 11 mũ 2
    C1: 11³-11²=$11^{3-2}$ =11
    C2:11³ – 11²=1331 : 121 = 11
    -16 mũ 2 chia 4 mũ 2
    C1: 16² : 4² = (16 : 4)² = 4² = 16
    C2: 16² : 4² = 256 : 16 = 16
    -25 mũ 2 chia 5 mũ 2
    C1: 25² : 5² = (25 : 5)² = 5² = 25
    C2: 25² : 5² =525 : 25 = 25
     

  2. C1:11^3:11^2
    =11^(3-2)
    =11^1
    =11
    C2:11^3:11^2
    =1331:121
    =11
    —–
    C1: 16^2:4^2
    =(2^4)^2:(2^2)^2
    =2^8:2^4
    =2^(8-4)
    =2^4
    =16
    C2:16^2:4^2
    =256:16
    =16
    —–
    C1:25^2:5^2
    =(5^2)^2:5^2
    =5^4:5^2
    =5^(4-2)
    =5^2
    =25
    C2:25^2:5^2
    =625:25
    =25

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

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