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

Toán Lớp 6: (1mũ2+2mũ2+…+100mũ2)x(3mũ4-9mũ2)

Toán Lớp 6: (1mũ2+2mũ2+…+100mũ2)x(3mũ4-9mũ2)

Comments ( 2 )

  1. $ A = ( 1^2 + 2^2 +..+100^2 ) × ( 3^4 – 9^2 ) = ( 1^2 + 2^2 +..+100^2 ) × ( 9^2 – 9^2 ) = ( 1^2 + 2^2 + .. + 100^2 ) × 0 = 0 $

  2. Lời giải và giải thích chi tiết:
    (1^2 + 2^2 + ………… + 100^2) xx (3^4 – 9^2)
    = (1^2 + 2^2 + ………. + 100^2) xx (81 – 81)
    = (1^2 + 2^2 + ………. + 100^2) xx 0
    = 0

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

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