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

Toán Lớp 7: $\sqrt{\dfrac{3;9}{2;5}.3,4}.$`((3^2)/(4^2))/(9^9)`

Toán Lớp 7: $\sqrt{\dfrac{3;9}{2;5}.3,4}.$((3^2)/(4^2))/(9^9)

Comments ( 2 )

  1. \sqrt{\frac{3,9}{2,5}.3,4}.\frac{\frac{3^2}{4^2}}{9^9}
    Ta thấy: \sqrt{\frac{3,9}{2,5}.3,4}~~2,3
    =2,3 . 1,4
    =3,22
     

  2. \sqrt{\frac{3,9}{2,5}.3,4}  . \frac{\frac{3^2}{4^2}}{9^9}
    ≈2,3 . 1,4
    ≈ 3,3

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