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

Toán Lớp 6: tính F = (2^3.9^4+9^3.45):(9^2.10-9^2)

Toán Lớp 6: tính F = (2^3.9^4+9^3.45):(9^2.10-9^2)

Comments ( 2 )

  1. F = \frac{2^3 . 9^4 + 9^3 . 45}{9^2 . 10 – 9^2}
    F = \frac{8 . 9^4 + 9^3 .9 . 5}{9^2 . 10 – 9^2}
    F = \frac{9^{4}(8 + 5)}{9^2 (10 – 1)}
    F = \frac{9^{4}.13}{9^3}
    F = 9.13 = 117

  2. F = (2^3.9^4+9^3.45):(9^2.10-9^2)
    F = (8.6561+729.45):( 81. 10- 81)
    F = (52488 + 32805):( 810-81)
    F = 85293: 729
    F = 117

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

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