The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 0.1098\\[1 em]x_2 &= -1.3052\\[1 em]x_3 &= -1.8536\\[1 em]x_4 &= 1.8823 \end{aligned} $$Polynomial $ 6x^4+7x^3-22x^2-25x+3 $ has no rational roots that can be found using Rational Root Test, so the roots were found using quartic formulas.