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

Toán Lớp 7: (2/5) mũ 2+ 5 1/2.(4,5-2,5)+2 mũ 3/ -4

Toán Lớp 7: (2/5) mũ 2+ 5 1/2.(4,5-2,5)+2 mũ 3/ -4

Comments ( 2 )

  1. Giải đáp:
    (2/5)^2+5 1/2.(4,5-2,5)+2^3/(-4)
    =4/25+11/2.(4,5-2,5)+8/(-4)
    =4/25+11/2 .2+(-2)
    =4/25+11+(-2)
    =4/25+9
    =9 4/25(=229/25)

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

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