Mathematics
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    1/(1-x)>-1
    5x^2+3x<0
    (x+1)/(2x^2+5x-3)>=(x)/(4x^2-1)
    x(1减X)>0
    (1÷2)^3x>4
    90+20-(90*x)>89
    (3+x)+(x^2+6x-7)>0
    n+1.645√n-96≤0
    (2x+1)<3
    3^x>5x
    99k2-5020k-100>0
    (x-1)(x-2)
    
x^2-2x+1>0
    2x^2-5x-3<0
    k*(0.95^k)<1
    k*(0.9^k)<1
    k*0.9^k<1
    k0.9^k<1
    k0.75^k<1
    k0.7^k<1

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