The Quadratic Formula

It is used for equations of the form: $ax^2 + bx + c = 0$ where $a$,$b$ and $c$ are known values.

$x = \dfrac{(- {\color{#21affb}11} \pm \sqrt{{\color{#21affb}11}^2 - 4\times{\color{#21affb}3}\times{\color{#21affb}6}})}{2\times{\color{#21affb}3}}$

$x = \dfrac{(-11 \pm \sqrt{49})}{6}$

$x = \dfrac{(-11 {\color{#21affb}+} \sqrt{49})}{6}$ and $x = \dfrac{(-11 {\color{#21affb}-} \sqrt{49})}{6}$

$x = \dfrac{(-11 {\color{#21affb}+} \sqrt{49})}{6}$ can be simplified to $x=\dfrac{-4}{6}=\dfrac{-2}{3}$