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4. (x+1)³≥x³+3x²₊10
5. x³-6x²≥(x-2)³
6. -⅓x≥1
3. x+(x2-16)-(x2-16)<0
(x2-16)(x+1)<0
(x-4)(x+4)(x+1)<0
x=4 x=-4 x=1