x+1/x=2
    2x^2+50x-20x=128/25
    0=900x-120x-(12000000+560x)
    x（2x+1）=0
    (2/3-x)/(1+(2/3)×x)＝(3/2-2/3)/(1+(3/2)×(2/3))
    x/2-(5x+11)/6=1+（2x-4）/3
    x*x*x+3x*x-3x-10=0
    x/2-5x+11=1+2x-4/3
    -0.0576x^2+1.1268x-5.0718=0
    x＾0.1
    y *y1/5y-24/25=
    y2-1/5y-24/25=0
    100x＝[100-（100x）]×0.1
    x÷（x-10）=9÷8
    ln(x+5)=4.45906197
    ln(x+5)=5.2649
    ln(x+10)=5.174541
    e^x+3=0
    e^x+3=0
    x1/3

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