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from A X^4=IXI possible solutions 1,-1 and 0 (SubstituteIXI=+/-X)
From B X^2>X or X^2-X>0 or X*(X-1)>0
Either X>0 and X>1 which means X>1
OR X<0 and X<1 which means X<0
For B X(-inf;0) & (1;+inf)-NOT SUFF
FROM both x=-1 so C
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