Find roots of polynomial $$ p(x) = 16x^7-21x^6+6x^5+25x^4+12x^3+6x^2+6x-5 $$
Answer
The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 0.4099\\[1 em]x_2 &= -0.0005+0.6881i\\[1 em]x_3 &= -0.0005-0.6881i\\[1 em]x_4 &= -0.7427+0.3397i\\[1 em]x_5 &= -0.7427-0.3397i\\[1 em]x_6 &= 1.1946+0.9937i\\[1 em]x_7 &= 1.1946-0.9937i \end{aligned} $$Explanation
Polynomial $ 16x^7-21x^6+6x^5+25x^4+12x^3+6x^2+6x-5 $ has no rational roots that can be found using Rational Root Test, so the roots were found using Newton method.
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