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

Toán Lớp 10: Cho A = {x thuộc R: -1

Toán Lớp 10: Cho A = {x thuộc R: -1

Comments ( 1 )

  1. A={x\inR:-1<x\le4};B=[2;5];C=(4;8);D={x\inR:x\ge5}
    A∪B=(-1;5]
    A∩B=[2;4]
    A\B=(1;2)
    B\A=(4;5]
    ????

    toan-lop-10-cho-a-thuoc-r-1-be-hon-hoac-bang4-b-2-5-c-4-8-d-thuoc-r-lon-hon-hoac-bang-5-tim-a-ho

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