x(x+0.01)＝0.00000000018
    10000x^2+200x-1＝0
    10000x^2+200x-1＝0
    10000x^2+200x-1
    t^2-8/3*t+4/3=0
    xx+36=(8-x)(8-x)
    m^3+2m^2-2025m+2022
    x²+3x-2022=0
    8.096x^2-89.1x+81
    x^2-1.1026*x+1=0
    x^2+15x=240
    x2+15x=240
    x^3+x＝2
    x^2-4*x+4=0
    x^3-3x^2+3=0
    x^3-3x^2+3=0
    4x+4=3x+6
    (x+2):4=(x+1):3
    (x+2):4=(x+1):3
    5x+7=11

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