（3x-1)(2x+1)=6x
    2x+1=5
    3xx+300x+5000
    15x＋x*x=100
    15x＋x*x=100
    1194.093*0.93+3084.74*0.35+1389.91*sqrt(1-x^2)+3196.793*x = 4538
    1194.093*0.93+3084.74*0.35+1389.91*sqrt(1-x^2)+3196.793*x = 4538
     1194.093*0.94+3084.74*0.36+1389.91*sqrt(1-x^2)+3196.793*x = 4538
    2x^3-12x^2+23x-12=0
    2.21*1.06^x=0.4*1.08^x
    n＾2+n=2024
    1000*（X-180）=1500*（X-500）
    n＾2+n=20000
    x²+x+1=0
    1194.09*0.94+3084.74*0.34+1389.91*sqrt(1-x^2)+3196.793*x = 4538
    1194.09*0.9+3084.74*0.42+1389.91*sqrt(1-x^2)+3196.793*x = 4538
    1194.09*0.89+3084.74*0.44+1389.91*sqrt(1-x^2)+3196.793*x = 4538
    1194.09*0.94+3084.74*0.33+1389.91*sqrt(1-x^2)+3196.793*x = 4538
    x²＋x＋0.25＝0
    1194.09*0.92+3084.74*0.39+1389.91*sqrt(1-x^2)+3196.793*x=4538

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