Find roots of polynomial $$ p(x) = 6x^2+3x-\frac{13}{3} $$

The roots of polynomial $ p(x) $ are:

$$ \begin{aligned}x_1 &= 0.6358\\[1 em]x_2 &= -1.1358 \end{aligned} $$

Step 1:

Get rid of fractions by multipling equation by $ \color{blue}{ 3 } $.

$$ \begin{aligned} 6x^2+3x-\frac{13}{3} & = 0 ~~~ / \cdot \color{blue}{ 3 } \\[1 em] 18x^2+9x-13 & = 0 \end{aligned} $$

Step 2:

The solutions of $ 18x^2+9x-13 = 0 $ are: $ x = -\dfrac{ 1 }{ 4 }-\dfrac{\sqrt{ 113 }}{ 12 } ~ \text{and} ~ x = -\dfrac{ 1 }{ 4 }+\dfrac{\sqrt{ 113 }}{ 12 }$.

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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