(x+3)3 > 0, 2x4–x2–1>0, x4+3 ≥ 0, (x+7)2 ·(2x-1) <0, 4x6+5 ≤ 0, x3+2x2–x–2≥ 0, (x+1)2·(x2–4) > 0, (2–8x)·(x+1)4 ≤ 0, x3 +4x2+x–6> 0, (x2–1)·x3 < 0.

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