N
nhungtihon


tìm x thuộc (0;1) pit
(1+x^2+x^4+x^6)/(x-x^2+x^3-x^4)=-2/3
he he ngu wa k pjt viet
(1+x^2+x^4+x^6)/(x-x^2+x^3-x^4)=-2/3
he he ngu wa k pjt viet
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