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

Toán Lớp 7: 20 mũ 3 . ( -49 ) mũ 2/ 14 mũ 3. 5 mũ 4

Toán Lớp 7: 20 mũ 3 . ( -49 ) mũ 2/ 14 mũ 3. 5 mũ 4

Comments ( 2 )

  1. ~ Bạn tham khảo ~
    (20^3 . (-49)^2)/(14^3 . 5^4)
    = ((2.2.5)^3 . (-7^2)^2)/((7.2)^3 . 5^4)
    = (2^6 . 5^3 . (-7)^4)/((7^3) . 2^3 . 5^4)
    = (2^3 . 1 . 7)/(1 . 1 . 5)
    = 56/5
    $#Vịt vàng$

  2. (20^3 . (-49)^2)/(14^3 . 5^4)
    = ((2.2.5)^3 . (-7^2)^2)/((7.2)^3 . 5^4)
    = ((2^2)^3. 5^3. (-7)^4)/(7^3. 2^3. 5^4)
    = (2^6 . 5^3 . (-7)^4)/(7^3 . 2^3 . 5^4)
    = (2^3. 7)/5
    = 56/5

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