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    0.454373142*2-1-x=lg2((0.5+0.5*x)^0.1)
    (6.25×10^(-5)-x)(4.375×10^(-4)-2×x)^2=(3.5×10^(-5)-x)(1.5×10^(-5)-2×x)^2
    (6.25×10^(-5)-x)(4.375×10^(-4)-2×x)^2=(3.5×10^(-5)-x)(1.5×10^(-5)-2×x)^2
    (6.25×10^(-5)-x)(4.375×10^(-4)-2x)^2=(3.5×10^(-5)-x)(1.5×10^(-5)-2x)^2
    (6.25×10^(-5)-x)(4.375×10^(-4))^2=(3.5×10^(-5)-x)(1.5×10^(-5))^2
    lg2((0.5+0.5*x)^0.1)=0.1-x
    (0.5+0.5×x)^0.1-2^(0.1-x)=0
    x(120-x)=1400
    lg2(2-x)=1-x
    ln(0.008/x)=1.39(0.008-x)/(0.02-x)
    (0.02-x/(0.008-x))㏑(0.008/x)=1.39
    (44-x)*(20+5x)=1600
    x^2-300x+22500=0
    x^2-200x+7500=0
    x^2-200+7500=0
    1-i
    x÷2.5-x÷3=2×2
    9^x-8^x=17^x
    9^x-8^x=17^x
    X^2-4.6*X+202320100=0

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