x^5+10x^3+20x-4=0
    3000÷X ＋10=4000÷1.6x
    (X-20)÷(X÷25%-20)=0.1
    -10x²+100x+2000=810
    (565x)^2=2.1158-(15762.504x^2)-30.068x^(2/3)
    lnlnx
    3X—4X十2=0
    x㏑(x÷6.016)=0.651
    x㏑(x÷6.016)=22.14÷33.38÷8.141
    1000052+52488662x552-428855÷556
    X+1.5x+2.5X－15=65
    X+1.5x+2.5X=65
    192x＾2+133x+1332=0
    6x²+3x-6.3=36405596.7
    210×（10-x）-450-150=570
    55x^2+64x+7=0
    55x^2+64x+7=0
    (3x+4+5x)/√(x^2+1)=3
    (-8x-4)^2=9x^2+9
    4/(4+n)+10%=9/(9+n)

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