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

Toán Lớp 6: tính giá trị biểu thức d=3 mũ 22 x 11 x 3 mũ 7 +9 mũ 15/ (2 x3 mũ 14)mũ 2

Toán Lớp 6: tính giá trị biểu thức d=3 mũ 22 x 11 x 3 mũ 7 +9 mũ 15/ (2 x3 mũ 14)mũ 2

Comments ( 2 )

  1. D = (3^22×11×3^7 + 9^15)/(2×36^14)^2
    D = (3^29×11 + (3^2)^15)/[2×(2^2×3^2)^14]^2
    D = (3^29×11 +  3^30)/(2×2^28×3^28)^2
    D =  (3^29×(11 + 3))/(2^29×3^28)^2
    D =  (3^29×2×7 )/(2^58×3^56)
    D = 7/(2^57×3^27)
     

  2. D = (3^22 × 11 × 3^7 + 9^15)/((2 × 3^14)^2)
    D = (3^29 × 11 + 3^30)/(2^2 × 3^28)
    D = (3^29 × (11 + 3))/(2^2 × 3^28)
    D = (3 × 14)/4
    D = 21/2

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

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