8x∧2+（8300-8x）*8x=5300∧2
    8x∧2+（8300-8x）*8x=5300*5300
    8x∧2=8
    8x∧2
    x∧2
    x
    22050*300+50*y=(300+y)*12000
    22050*300+50*y=300+y*12000
    X/1.01=100+(X/1.01*1%*12%）+(X/1.01+100)*0.0003+(X/1.01-100-((X/1.01+100)*0.0003)-(X/1.01*1%*12%))*5%
    x÷(190-x)=0.618
    x²-16x-64=0
    r²-16-64=0
    a+(a+2)+(2a-23)+(52-a)=28*4
    x^x=7
    3^x=x^9
    1000(0.9x)
    x^5-4*x+3=0
    4xx-4x-15=0
    x^4+2x^3+x^2-4x^2-4x-12=0
    (x^2+x)^2-4(x^2+x)-12=0

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