x-5.03%*x-x*2.25%=167689.84
    x-5.03%*x-x*2.25%=167689.84
    x^2-6*x+9=0
    x-5.03%*x-x*2.24%=167689.84
    X-(X*0.0503+X*0.023)=167689.84
    log(1/(0.0005585*x+1))=21.6-7.65*x/132/100/(0.0005585*x+1)
    （0.2-x）（0.6-2x）^2=2.5*10^-9
    x-5.03%*x-x*2.24%=167689.84
    x-5.03%*x-x*2.24%=167689.84
    X-(X*0.53+X*0.023)=167689.84
    x+5.03%*x+2.24%*x=167689.84
    （3527-x）（2732-x）=8690000
    sinx/x（x-3）（x-5）
    aa=7 ab=14 bb=
    aa=7
    sin(x+1)+sin(e*x)=1.5
    sin(x+1)+sin(e*x)=1.8
    sin(x+1)+sin(e*x)=1.9
    sin(x+1)+sin(e*x)=1
    sin(x+1)+sin(e*x)=1.9999

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