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

Toán Lớp 7: D=4^5 . 9^4 – 2 . 6^9 / 2^10 . 3^8 + 6^8 . 20

Toán Lớp 7: D=4^5 . 9^4 – 2 . 6^9 / 2^10 . 3^8 + 6^8 . 20

Comments ( 2 )

  1. D = (4^5 . 9^4 – 2 . 6^9)/(2^10 . 3^8 + 6^8 . 20)
    D = ((2^2)^5 . (3^2)^4 – 2 . 6^9)/(2^10 . 3^8 + 3^8 . 2^8 . 2^2 . 5)
    D = (2^10 . 3^8 – 2 . 2^9 . 3^9)/(2^10 . 3^8 + 3^8 . 2^10 . 5)
    D = (2^10 . 3^8 – 2^10 . 3^8 . 3)/(2^10 . 3^8 + 3^8 . 2^10 . 5)
    D = (2^10 . 3^8 . (1 – 3))/(2^10 . 3^8 . (1 + 5))
    D = (-2)/6
    D = -1/3

  2. Lời giải và giải thích chi tiết:
    D = (4^5 . 9^4 – 2 . 6^9)/(2^10 . 3^8 + 6^8 . 20)
    D = ((2^2)^5 . (3^2)^4 – 2 . (2 . 3)^9)/(2^10 . 3^8 + (2 . 3)^8 . 2^2 . 5)
    D = (2^10 . 3^8 – 2^10 . 3^9)/(2^10 . 3^8 + 2^10 . 3^8 . 5)
    D = (2^10 . 3^8 . (1 – 3))/(2^10 . 3^8 . (1 + 5))
    D = (2^10 . 3^8 . (-2))/(2^10 . 3^8 . 2 . 3)
    D = -(2^11 . 3^8)/(2^11 . 3^9)
    D = (-1)/3

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