Question
Find roots of polynomial $$ p(x) = 4x^2+5+20x $$
Answer
The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= -0.2639\\[1 em]x_2 &= -4.7361 \end{aligned} $$Explanation
Step 1:
Write polynomial in descending order
$$ \begin{aligned} 4x^2+5+20x & = 0\\[1 em] 4x^2+20x+5 & = 0 \end{aligned} $$Step 2:
The solutions of $ 4x^2+20x+5 = 0 $ are: $ x = -\dfrac{ 5 }{ 2 }-\sqrt{ 5 } ~ \text{and} ~ x = -\dfrac{ 5 }{ 2 }+\sqrt{ 5 }$.
You can use step-by-step quadratic equation solver to see a detailed explanation on how to solve this quadratic equation.
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