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    (x-3)(x-1)(x+1)(x+3)=3465
    2880=480t+25t²
    (5.6408-5.6408/1.13*0.13+0.13)/6.79=x
    (6.7562-6.7562/1.13*0.13+0.15)/6.79=x
    10(√x^2+1)=x^2×√(100x^2+1)×√(0.01x^2+1)
    10√x^2+1=x^2×√(100x^2+1)×√(0.01x^2+1)
    3.7913=((30.56*0.847(x+0.1))/(1+0.847(x+0.1))*((100-8.28-1.4)/100)*(1/(1+0.31*1.4)+((2.26(x+0.1))/(1.3*0.101325))
    25.2/(1+x/12)^2+16.8/(1+x/12)^3+8.4/(1+x/12)^4=47.6
    25.2/(1+x)^(1/6)+16.8/(1+x)^(12*3)+8.4/(1+x)^(12*4)=47.6
    25.2/(1+x/12*2)+16.8/(1+x/12*3)+8.4/(1+x/12*4)=47.6
    x*92%*101%=1600000
    12.04c=(3.4+c)×7.95
    4.5107=((30.56*0.847(x+0.1))/(1+0.847(x+0.1))*((100-8.28-1.4)/100)*(1/(1+0.31*1.4)+((2.26(x+0.1))/(1.3*0.101325))
    3.8814=((30.56*0.847(x+0.1))/(1+0.847(x+0.1))*((100-8.28-1.4)/100)*(1/(1+0.31*1.4)+((2.26(x+0.1))/(1.3*0.101325))
    (25.343+x)×3.15=50.687+68.83-x
    (25.343+x)×2.95=50.687+68.83-x
    (25.343+x)×2.65=50.687+68.83-x
    (25.343+x)×2.75=50.687+68.83-x
    (25.343+x)×2.55=50.687+68.83-x
    (25.343+x)×2.35=50.687+68.83-x

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