a) 2/x + 1/x-1 - 1/x+1 ≤ 0b) 4-x/x-5 ≥ 1/1-xc) 1/3x - x2 - 2 > 3/7x - 4 - 3x2
d) (6 - x)(x2 - 4x – 4) ≥ 0
e) 3(x - 1) ≥ 7 - 8x/x + 1
f) x2 – 5x + 6/x2 + 5x + 6 ≥ x+1/x
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