e2-6e+9<=0
    4e2+4e+1>=0
    x-x2+6<0
    3e2-3e+1>-3/2e2
    e-e2+6<0
    e2+2e-3<=0
    （x^2）-1>=0
    1-[(a+0.5349)-(a*0.5349)]>1-0.5930
    x-(1+x*1%）≥60
    a^2-1.0698a<0.8791
    x-(1+x*1%）≥10
    2a-1＜0＜a
    120x-4X>X
    （62+x）÷（119+x）≥0.6
    （56+x）÷（119+x）≥0.6
    （56+x）÷（116+x）≥0.6
    log(2,a)<1/2
    x-22<12x-2
    0.25x*√(100-x^2)>0
    -(2k-1)^2-4(k^2+1)＞0

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