x(x+0.0017)=0.001(0.0983-2x)^2
    x(10-2x)/2=4
    x(10-2x)/2=4
    2(1+x)^2=2.42
    10001x^2-24x-256=0
    x^2-2024x+2023=0
    x^2-2024x+2023=0
    x^2-2024x+2023=0
    3.210.212x4
    3.210.212x=4
    3.2/0.2/2x=4
    3.2/0.2/2x=4
    3.2/0.2/2x=4
    2.7x+5=20-2.3x
    2.7x+5=20-2.3x
    2.7x+5=20-2.3x
    12-(x-10)=2.4
    (4*3/(x+5/3))^2+(3x+5)/5=(13/5-x)^2+16
    (4*3/(x+5/3))^2+(3x+5)/5=(13/5-x)^2+16
    （x-60）（-20x+2400）=16000

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