Mathematics
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    4≤4x+78-8(x-1)
    x²+x-1<0
    x²+3x+4>0
    x²+6x+9≤0
    -3x²-2x+1<0
    3x²-7x-6≥0
    (-2k-1)^2-4*4*(k-0.5)>0
    (-2k-1)^2-4*4*(k-0.2)>0
    -x²+3x-2>0
    (2m+1)^2-4(m^2-1)>0
    (1-x)/1>0
    ln(x-1)≥0
    3<4x-3<5
    x^2-7x-10 ≥0
    x^ 2-7x-10大于等于0
    x2-7x-10大于等于0
    x2-7x-10 ≥10
    tanx^2-x^2>0
    (tanx)^2-x^2>0
    (m+2)^2 -4*(2m-1)<0

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