Mathematics
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    0.5sqrt(-0.5*17^2+25*17-100)+0.5sqrt(-0.5*17^2+15*17-100)
    0.5*17^2+5*17+100
    !(47)
    0.85*42X+0.15*15X=32000*0.53
    0.85*42X+0.15*15X=17077
    0.85*42X+0.15*15X=17077*0.53
    0.85*42*450+0.15*15*450=
    0.85*42*450+0.15*20*450=
    0.85*42*450+0.15*20*450=33315*0.53
    0.85*42x+0.15*20X=33315*0.53
    X*0.82*42+X*0.18*15=23000*0.5
    X*0.82*42+X*0.18*15=12000
    (x*2)/3=(x*4)/3
    (x*2)/3=(x*1)/3
    (1*2)/3
    (x+2)^2=2x(x-1)
    sin36
    100+1234x=0
    (1+x)^120=0.56
    3.8030e+12

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