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

Toán Lớp 6: Tính nhanh (144-1²)*(144-2²)*(144-3²)*…*(144-13²)

Toán Lớp 6: Tính nhanh
(144-1²)*(144-2²)*(144-3²)*…*(144-13²)

Comments ( 2 )

  1. Giải đáp + Lời giải và giải thích chi tiết:
     (144 – 1^2)*(144 – 2^2)*(144 – 3^2)*…*(144 – 13^2)
     = (144 – 1^2)*(144 – 2^2)*(144 – 3^2)*…..*(144 – 12^2)*(144 – 13^2)
    = (144 – 1)*(144 – 4)*(144 – 9)*…..*(144 – 144)*(144 – 169)
    = (144 – 1)*(144 – 4)*(144 – 9)*….*0*(144 – 169)
    = 0

  2. ( 144 – 1^2 ) × ( 144 – 2^2 ) × ( 144 – 3^2 ) × … × ( 144 – 13^2 )
    = ( 144 – 1^2 )× ( 144 – 2^2 ) × ( 144 – 3^2 ) × … × ( 144 – 12^2 ) × ( 144 – 13^2 )
    = ( 144 – 1^2 )× ( 144 – 2^2 ) × ( 144 – 3^2 ) × … × ( 144 – 144 ) × ( 144 – 13^2 )
    = ( 144 – 1^2 )× ( 144 – 2^2 ) × ( 144 – 3^2 ) × … × 0× ( 144 – 13^2 )
    = 0
    #dtkc

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

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