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

Toán Lớp 8: 9 mũ 8.2 mũ 8-(18 mũ 4-1)(18 mũ 4+1)

Toán Lớp 8: 9 mũ 8.2 mũ 8-(18 mũ 4-1)(18 mũ 4+1)

Comments ( 2 )

  1. 9 mũ 8.2 mũ 8-(18 mũ 4-1)(18 mũ 4+1)
    = (9.2)^8-[(18^4.2)-1^2]
    =18^8-18^8+1
    =1

  2. Lời giải và giải thích chi tiết:
    9^8 . 2^8 – (18^4 – 1)(18^4 + 1)
    = (9 . 2)^8 – [(18^4)^2 – 1^2]
    = 18^8 – (18^8 – 1)
    = 18^8 – 18^8 + 1
    = 1

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

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