[tex]\large\begin{array}{I} \mathtt{ Use~ the~formula,~ x= \dfrac{-b \pm \sqrt{b^2-4ac}}{2a} } \end{array}[/tex]
[tex]\large\begin{array}{I} \mathtt{ x= \dfrac{6 \pm \sqrt{(-6)^2-4 \times 4 \times 1}}{2 \times 4}= \dfrac{3+ \sqrt5}{4},~\dfrac{3- \sqrt5}{4} } \end{array}[/tex]
