2.159=＜0.285+0.005x＞x∧1.5
     4 { x }^{ 4 } + { x }^{ 3 } -3 { x }^{ 2 } -2x+1 > 0
    4x-64大于0
    a＾2-2a≤9
    1>x*x-4x>0
    1>x/(4-x)>0
    x/(4-x)>0
    4m＾2-4m-8<0
    2m＾2-2m-1<0
    m＾2-m-8<0
    0.0002/0.0002+x＜0.0004
    0.0002/0.0002+x＜40
    sqrt(9.8*((6+2*b)/(6+b)))≤0.8
    x(x+1)＞3
    e-0.1t≥1/2
    3x∧2-x≥0
    2*x^3-3*x^2+1>0
    2x^3-3x^2+1>0
    2x^3-3x^2+1>0
    768*0.75^(n-1)<7

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