X^2-6 x+8=0
    15x^3-35x^2+13x-1＝0
    x^3－x＋1
    x×x+x=342
    5a^2-4a=0
    -2x=3√7-3√7x^2
    2x=3√7-3√7x^2
    64x^2+63/2x+47/16
    64x2+63/2x+47/16
    120-x/60＝1.2
    x^3-2x^2=144
    -0.0636x^2+1.2072x-5.4644=0
    2y^4+3y^3+y^2=0
    -0.2184x^2+3.4698x-12.19=0
    X-X/1.01*0.01-(X-X/1.01*0.01)*0.043=13039
    X-X/1.01*0.01-(X-X/1.01*0.01)*0.043=379327.31
    -0.1596x^2+2.5926x-9.473=0
    -0.1152x^2+2.013x-7.9394=0
    -0.1272x^2+2.1324x-8.173=0
    2xx+5＝-7x

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