sprt(2)
    ㏑x=(1/x)+1
    x*(e^x+tan(x))(e^x+tan(x))-1
    （3x+2）/4=8
    （3x+2/4）=8
    x²+4x-92=0
    [（X+113847.28）/1.13*0.13-50979.22]/(X+113847.28)/1.13=0.016
    x²-24x-44=0
    x2-24x-44=0
    (4X+1)(4X+1)-8(2XX-1)
    [(1-x²)/x]²+{[1-x*√(1-x²)]/x}=13
    1/5x－x
    x÷5＝x－36
    x÷5＝x－39
    5x-12=0
    2x^3+5x^2-12=0
    1.35*(2606.5*(4.54-x/0.7)^2/(9.52+2*x)/(1.2+2*x)+140.4)/(0.9*360*1000*0.45)=2453/1000000
    1.35*(2606.5*(4.54-x)^2/(9.52+2*x)/(1.2+2*x)+140.4)/(0.9*360*1000*0.45)=2453/1000000
    1.35*(2606.5*(4.54-x)^2/(9.52+2*x)/(1.2+2*x)+140.4)/(0.9*360*0.45)=2453
    1.35*(2606.5*(4.54-x)^2/(9.52+2*x)/(1.2+2*x)+140.4)/(0.9*360*450)=2453

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