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x^2-((x/2)*x)-1 = 0;x
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12*x-3*x^2-12 >= 0;x
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3*x^2-(12*x)+12 > 0;x
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3*x^2-(12*x)-12 > 0;x
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3*x^2-(12*x)+12 <= 0;x
x
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