x>x*x
    0.5(x+1)<=2/3x-1 (x+3)/2-(2x-1)/3>1 3x-1>2(x-1) (x+1)/6-(2x-5)/4>=1
    3m-5^（3+m）>4
    0.948*10^5*（23.76^1.77）÷x^4.77*208*0.404≤0.2*30
    1.05^x>1.03^(x-1)
    11X≥-11
    1000y+120-6y/4*500≤18200
    [2.6/(1+x)*3]+[1.5/(1+x)]>8
    10T^2/(1+T)>-1
    10T^2+T+1>0
    -a>2
    x＜x+3
    3x^2+2x+3>12
    -x^2+9x<10x+9
    -x^2+9x>10x+9
    -2*x^2+9x>10x+9
    2*x^2+9x>10x+9
    2*x^2+9x>10x-9
    2*x^2+9x>10
    -2*x^2+9x>10

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