Question

Find the square root of : root 18 - root 16

Answer 1

$$\begin{gathered} \sqrt{\sqrt{18}-\sqrt{16}} \\ =\sqrt{3\sqrt{2}-4} \\ =\sqrt{3\times 1.414-4} \\ =\sqrt{4.242-4} \\ =\sqrt{0.242} \\ =0.49 \end{gathered}$$