Question 919759
You can use Rational Roots Theorem and Descarte's Rule of Signs.  Possible five roots.  Use synthetic division to check possible roots -1,-2,-4,-3,-6,-12, and 1,2,3,4,6,12.  Each root you find makes the next roots to be found as simpler to do.


A quick check of the graph using Google shows only one real root near x=1.2