116/x=3/2*ln(x)-9.2
    116/x=3/2*ln(x)-2.3
    25-2(x+4)=3x-3
    d^3+2d^2-2d+1＝0
    √2 x^2+12√2 =14x
    x+（x*0.225）= 23900
    1+X/1+2%-1=10%
    3s^2+6s+2=0
    3s*2+6s+2=0
    x²+x=270
    3x*2+6x+2＝0
    x*2+x=270
    1+X/1+0.02-1=0.1
    1+X/1+2%=10%
    2*lnx+3=0
    √2 x^2=7 x+2√2 x-14
    x^2-28x+125=0
    5/7x-2/7x=21
    √2 x^2-√2 x-7x+7=0
    b²-150b+3600=0

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