\begin{equation}\sqrt{4} \times \sqrt{4}\end{equation}

\begin{equation}\sqrt{6} \times \sqrt{150}\end{equation}

\begin{equation}\sqrt{25} \times \sqrt{50}\end{equation}

\begin{equation}\sqrt{128} \times \sqrt{2}\end{equation}

\begin{equation}\frac{\frac{\sqrt{8}}{8} \times \sqrt{8}}{8}\end{equation}

\begin{equation}(5-\sqrt{7}) \times (5+\sqrt{7})\end{equation}

\begin{equation}(4 \times \sqrt{3})^{2}\end{equation}

\begin{equation}\sqrt{(7x)}\sqrt{(5x+3)}\end{equation}

\begin{equation}\sqrt{(3x)}\sqrt{(48x^{3})}\end{equation}

\begin{equation}6\sqrt{(40x)}\sqrt{(30x)}\end{equation}

\begin{equation}2\sqrt{(10x)}\sqrt{(392x)}\end{equation}

\begin{equation}2\sqrt{(9x)}\sqrt{(72x)}\end{equation}