xxx+8x-8=0
    z^3+z^2+z=0.001
    z^3-2z^2+2z=0.99
    z^3-20z^2+200z=999
    z^3-2z^2+2z=0.999
    z^3-2z^2+2z=65/66
    （x-95）+（x-102）+（x-100）+（x-99）+（x-104）=x
    1/√(2πx)*e^(-x/2)=0.0001
    100*x*222.64/(x*222.64+(1-x)*0.5*335.17)=93.618
    100*x*222.64/(x*222.64+(1-x)*0.5*335.17)=92.923
    335938.50 =（X/1.13）*13%+(( 4068588.51 -X)/1.06)*6%
    e-0.1x
    100e-0.1x
    x*25%=1%*1%
    335938.50 =(X*0.13)/1.13+(( 4068588.51 -X)*6%)/1.06
    142707.06=(X*0.13)/1.13+((1728341.02-X)*6%)/1.06
    1728341.02=(X*0.13)/1.13+((142707.06-X)*6%)/1.06
     652350.15 =(X*0.13)/1.13+(( 7900685.10 -X)*0.06)/1.06
    480511.71=(X*0.13)/1.13+((5819530.72-X)*0.06)/1.06
    a²-4a+4＝0

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