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    (1+i)*(1+i)*(1+i)=1.49
    (1+i)*(1+i)*(1+i)=27
    5.5 t^2 -0.6 t-1.5=0
    27=i^3
    x^2-x-240=0
    (1+i)^3=1.49
    31.5×(1+i)^3=46.98
    31.5×(1+i)^3=46.98
    31.5×(1+i)3=46.98
    (1+i)^3=1.49
    2x^2+x-2=0
    (192.5+95.256x)/(3.5+15.12x)=25
    100*(x/12*(1+x/12)^60)/((1+x/12)^60-1)=3
    x^x=0.9
    x^x=0.9
    C(x,6)=x^5
    x^9-x=x^6
    x^2-8x+12=0
    (x-0.47)(x-0.48)÷(0.47-0.46)÷(0.46-0.48)×0.4846555+(x-0.46)(x-0.48)÷(0.47-0.46)÷(0.47-0.48)×0.4937452+(x-0.46)(x-0.47)÷(0.02×0.01)×0.5027498=0.5
    3x/(x+1)

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