t^2-24t-32
    3^(2x-1)+3^(x-1)=2
    x²−1400x+122500=0
    （31958-X）/X=0.7
    （1159-X）/X=0.55
    sin（sinx）
    sinx=0.68269
    sinx=0.68269
    25x^2+200/13x+625/169=9
    x^4
    （1158-X）/X=0.55
    X²-2024x+2023=0
    -q²-q+2＝0
    x（72-x)/3=324
    （6+x）（8+x）－6×8=51
    72x-x^2=324
    2x²-9x=34
    1.6（x-1）=2.5
    750*(200+2000)/(200-x)+x=2750
    -x^2+2950x+1100000=0

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