The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= -\frac{ 2 }{ 7 }\\[1 em]x_2 &= -1 \end{aligned} $$The solutions of $ 7x^2+9x+2 = 0 $ are: $ x = -1 ~ \text{and} ~ x = -\dfrac{ 2 }{ 7 }$.
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