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
    -x^2+2950x+1100000=0
    -x^2+2200x+1250000=0
    x^2+2=0
    37500/x+1000=2x
    37500/x+100=2x
    375000/x+1000=2x
    a^4+6a^3+11a^2-42a-63=0
    x-(x*0.006)=556.74
    sinx+sinx/1
    sinx+sinx/1
    12-2a=27-5a

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