（x^3+2x^2+3x+4）（x^2-5x+6）=（x^3-2x^2+3x-4）（x^2+5x+6）
    X+6=9
    （10960+3+X）*3.7%=4*X
    x÷（x+1）=0.98
    x÷（x-1）=0.98
    x÷（x-1）=0.98
    1050-1050X=610
    682.5-682.5X=386
    297.5-297.5X=342
    297.5-297.5X=158
    25*x^6+264*x^4-1776*x^2+6400+20*2^1/2
    0.04×x^4+1.174×x^2+8.96×x+24=0
    4.191=（24.1*0.449*（x+0.1））/（1+0.449（x+0.1））*（100-9.66-1.06）/100*1/(1+0.31*1.06)+（2.86（x+0.1））/（1.36*0.101325）
    4.9t^2-7t+1.6=0
    2^(96)*((1-2^(-8)*(2^4-1)/2^4))^(2^(t-9)) = 2^(70)
    S/19.5-1/20=S/21
    S/19.5+1/20=S/21
    2^(96)*((1-2^(-8)*(2^(-4)-1)/2^(-4))^(2^(t-9))) = 2^(70)
    2^(96)*((1-2^(-8))^(2^(t-9))) = 2^(70)
    2^(96)*((1-2^(-8)*(2^(-4)-1)/2^(-4)))^(2^(t-9)) = 2^(70)

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