4x² +3x +5=0 solve by factorisation and by quadratic formula method?

Dear student
$$\begin{gathered} \mathrm{Given}, 4{\mathrm{x}}^2+3\mathrm{x}+5=0 \\ \mathrm{x}=\frac{-\mathrm{b}\pm \sqrt{{\mathrm{b}}^2-4\mathrm{ac}}}{2\mathrm{a}} \\ \Rightarrow \mathrm{x}=\frac{-3\pm \sqrt{9-80}}{8} \\ \Rightarrow \mathrm{x}=\frac{-3\pm \sqrt{-71}}{8} \end{gathered}$$
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