Mathematics
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    5-((5^2-30)/2*5)
    300000000➗3.6
    4x+2-10x-1=6
    -(3X-1)(2-x)(3X+4)
    (s+1)(s-2)(s+3)
    x-(x/200)*30 =11670.76
    P×120000-15000000-(165+250)×120000
    5/1-7i
    x(x+0.001)=8.3*10^-17
    (1+k)^10
    70.42+117.1
    14.89+70.42+117.1
    x-5000=5000×3.5%
    8x-60-4x=72
    1623747600+(-1883401087)=
    (x/2)0.2(x/2-1)=9
    (20/x)-1=(2/x)^0.2((2/x)-1)
    20/x-1=(2/x)^0.2(2/x-1)
    2.6*100000*Q*Q+2.4*100000*Q*Q=20.9
    45(3x-6)+25(3x-8)=

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