Question
Find roots of polynomial $$ p(x) = 21x^2-399x+912 $$
Answer
The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 16.3426\\[1 em]x_2 &= 2.6574 \end{aligned} $$Explanation
The solutions of $ 21x^2-399x+912 = 0 $ are: $ x = \dfrac{ 19 }{ 2 }-\dfrac{\sqrt{ 9177 }}{ 14 } ~ \text{and} ~ x = \dfrac{ 19 }{ 2 }+\dfrac{\sqrt{ 9177 }}{ 14 }$.
You can use step-by-step quadratic equation solver to see a detailed explanation on how to solve this quadratic equation.
This page was created using
Polynomial Roots Calculator