Find roots of polynomial $$ p(x) = 42x^6-120x^5+20x^4+8x^3+21x^2+18x+1 $$
Answer
The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= -0.0596\\[1 em]x_2 &= -0.4558\\[1 em]x_3 &= 0.9374\\[1 em]x_4 &= 2.6091\\[1 em]x_5 &= -0.087+0.5922i\\[1 em]x_6 &= -0.087-0.5922i \end{aligned} $$Explanation
Polynomial $ 42x^6-120x^5+20x^4+8x^3+21x^2+18x+1 $ has no rational roots that can be found using Rational Root Test, so the roots were found using Newton method.
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