Question 1026927
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One root is {{{1/2}}}.


Having it, you can analyze it further and get other roots.


The method of finding rational roots to polynomials with integer coefficients is based on "Rational root theorem".
See, for example, this Wikipedia <A HREF=https://en.wikipedia.org/wiki/Rational_root_theorem>article</A>.


Probably, you can find equivalent explanations in your Algebra textbook.