（505+X）/（1107+X）=0.6
    xxx=1
    0.256a*3204+0.221a*6480+0.203a*11052+0.168a*12852+0.152a*11184=446275
    256a*3204+221a*6480+203a*11052+168a*12852+152a*11184=446275
    256a*3204+220a*6480+203a*11052+168a*12852+152a*11184=446275
    360+4.2x=1050+1.5x
    xarctanx=x/sqrt3
    tan-1(z/0.3)=2.5
    0.34=（（0.021*x^1.85+128）^0.5）*x^0.84
    0.034=（（0.021*x^1.85+128）^0.5）*x^0.84
    0.0034=（（0.021*x^1.85+128）^0.5）*x^0.84
    0.26=（（0.021*x^1.85+128）^0.5）*x^0.84
    0.026=（（0.021*x^1.85+128）^0.5）*x^0.84
    0.705=（（0.021*x^1.85+128）^0.5）*x^0.84
    0.0705=（（0.021*x^1.85+128）^0.5）*x^0.84
    x^3-12*x^2-100*x+1200＝0
    x^3-3*x^2+3*x
    5.54*w*(w+1)=(36*36+3.91*36)^0.5
    （x-69+4.5）x3.1699-90=0
    566.1X+X²=108963.3

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