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    10x-5(1-x)=5(0.1x+0.2)-10
    2=√x^3+2
    -2x^5+2x^4+6x^3-2x^2+x+2=0
    4(2x-1)-2(10x-3)=12-3(2x+1)
    2(3-x)=-4(x+5)
    m²-m=2
    7(1-2x)=3(2x+1)+84
    m²+m-4=2
    700cos20=xcos22.5
    700cos20=725cosx
    cosx=54/55
    6x-2(1-x)=6
    54cos20=55cosx
    1/(2+x^2)
    x-sinx-1=0
    inv22
    120cos20=122cosx
    cosx=0.048236
    0.15-2*x/(2303.95*9.80665)*(1-ln(2*x/(2303.95*9.80665*0.15)))-0.0864
    0.15-2*x/(2303.95*9.80665)*(1-ln(2*x/(2303.95*9.80665*0.15)))-0.0865

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