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

Toán Lớp 7: `Tìm\ x:\ x – 30^2 = 2^(2) . 5^(2)`

Toán Lớp 7: Tìm\ x:\ x – 30^2 = 2^(2) . 5^(2)

Comments ( 2 )

  1. x – 30^2 = 2^2 . 5^2
    x –  900 = 4 . 25
    x – 900 = 100
    x = 100 + 900
    x = 1000
    Vậy x = 1000

  2. x-30²=2².5²
    x-900=4.25
    x-900=100
    x=900+100
    x=1000
     

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

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