4^x+4^-x≤2^x+2^-x-7/4
    -5x<2x+1
    -5x<2x+1
    x^3+6*x^2+7*x+12>=0
    3*p＾2-2*p＾3≦0.01
     2 * ( x + 2 ) ≤3 * ( x + 3 )
    2(x+2)≤3(x+3)
    16*2x>12*2x
    x－4>7
    4x+1>2x+1
    X>5
    4-4m<0
    4+4m<0
     2x/(200000×1000)≥800/10^9
    2x/(200000×1000)＞800/10
    (2a∧2-6a+1)-(a∧2-4a－1)＞0
    a∧2-2a+2＞0
    ln(3x+4)≥0
    92x>x^2+3x+1600
    4x^2-4x-8≥0

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