\begin{equation}64x^{2}=25\end{equation}

\begin{equation}100x^{2}+20x+1=0\end{equation}

\begin{equation}x^{2}+49=0\end{equation}

\begin{equation}x^{2}+8x+16=0\end{equation}

\begin{equation}x^{2}+18x+130=0\end{equation}

\begin{equation}x^{2}+16x+60=0\end{equation}

\begin{equation}35x^{2}+12x+1=0\end{equation}

\begin{equation}20x^{2}+66x+54=0\end{equation}

\begin{equation}x^{2}+14x+46=0\end{equation}

\begin{equation}36x^{2}+12x-9=0\end{equation}

\begin{equation}81x^{2}+126x+40=0\end{equation}

\begin{equation}25x^{2}+10x+10=0\end{equation}

\begin{equation}4x^{2}+12x+12=0\end{equation}