Mathematics
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    ㏑(1+sinx²)
    ㏑(1+sinx²)
    -4x²+760x-29700=6300
    900-150x=1000+560x
    (x+5)²-x²=145
    3×90÷a=(3-a)×[60÷(3-a)]
    x²+7x=170
    x²+x=380
    x²+x=380
    x²+7x=170
    0.623*sinx-x+0.986=0
    0.623*sinx-x+0.986=0
    0.623*sinx-x+0.986=0
    x+(100-x)=100
    4.9x²+340x-2380=0
    X/111-.2-10/44.7=0.00143(X+240)
    X/111-.2-10/44.7=0.00143(X+210)
    X/111-.2-20/44.7=0.00143(X+260)
    14-2x+3x=15
    X/111-.2-20/44.7=0.00143(X+220)

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