-2698.304*(1+x)^(-1)-1156.416*(1+x)^(-2)+5544.93*(1+x)^(-3)+7098.55354*(1+x)^(-4)+9066.907468*(1+x)^(-5)+9066.907468*(1+x)^(-6)+9066.907468*(1+x)^(-7)+9066.907468*(1+x)^(-8)+9066.907468*(1+x)^(-9)+9066.907468*(1+x)^(-10)=0
    352x=x^2+40000-22500
    -2698.304*(1+x)^(-1)-1156.416*(1+x)^(-2)=0
    X*（X+0.01）/（0.01-X）=1.8
    0.3x²-8.85x-6=0
    （374*50）+（X*2.5*50%）=452
    51635.208^2=(2/x)-(2/x^2)(1-e^(-x))
    （40÷X+8.5）÷（50÷X+6.8）=0.507÷0.493
    k^2-2k-4=0
    x+8*sqrt2=sqrt2*x
    51635.208*2=(2/x)-(2/x*2)(1-e*(-x))
    （40÷X+8.5）÷（50÷X+6.8）=0.507÷0.493
    x^2+5x+2250=0
    x*x+5x+2250=0
    ln（2^x+sinx）
    4.52x×x-9.04x+0.12=0
    （38.584+x）×2.05＝38.584+67.968-x
    （x∧2）/(0.1-x)＝0.0001
    x∧2＝0.0001
    x∧2＝0.0001

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