2x2-10x<0, -x2+3x<0, 9-x2≥0, x2≤0, x2≥0, 4x2+12x+9<0, x2+3x+9<0, -x2-3x-6≤0, 2x2-5x-3≥0, 0,5x2-8x>0, 3-x2>0, x2-2x+2>0, x2-3x+2<0.

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