\(\sqrt{0} = 0\)

\(\sqrt{49} = 7\)

\(\sqrt{144} = 12\)

\(\sqrt{16} + \sqrt{49} = 4 + 7 = 11\)

\(9 \sqrt{121} - 2 \sqrt{144} = 9 ⋅ 11 - 2 ⋅ 12 = 75\)

\(\sqrt{64} ⋅ \sqrt{49} = 8 ⋅ 7 = 56\)

\(\sqrt{11^{2} + 23} = \sqrt{121 + 23} = \sqrt{144} = 12\)

\(-\sqrt{25} = -5\)

\(\sqrt{-36}\) kan niet.

\(\sqrt{4^{2}} = 4\)

\(\sqrt{(-8)^{2}} = \sqrt{64} = 8\)

\(6 ⋅ \sqrt{81} = 6 ⋅ 9 = 54\)

\({2 \sqrt{2} \over 3} = \frac{2}{3} \sqrt{2} \text{.}\)

\(8 \sqrt{2} - 9 \sqrt{2} = -\sqrt{2}\)

\(2 \sqrt{7} - 9 \sqrt{6}\) kan niet korter.

\(2 \sqrt{7} ⋅ 3 \sqrt{7} = 6 ⋅ \sqrt{49} = 6 ⋅ 7 = 42\)

\(6 \sqrt{21} ⋅ 5 \sqrt{2} = 30 \sqrt{42}\)

\({\sqrt{15} \over \sqrt{3}} = \sqrt{5}\)

\({32 \sqrt{18} \over 8 \sqrt{6}} = {32 \over 8} ⋅ {\sqrt{18} \over \sqrt{6}} = 4 \sqrt{3}\)

\({21 \sqrt{32} \over 7 \sqrt{8}} = {21 \over 7} ⋅ {\sqrt{32} \over \sqrt{8}} = 3 ⋅ \sqrt{4} = 3 ⋅ 2 = 6\)

\((-5 \sqrt{8})^{2} = (-5)^{2} ⋅ \sqrt{8}^{2} = 25 ⋅ 8 = 200 \text{.}\)

\((\sqrt{11})^{2} = 11 \text{.}\)

\(7 (\sqrt{2})^{2} = 7 ⋅ 2 = 14 \text{.}\)

\((5 \sqrt{8})^{2} - 2 (\sqrt{3})^{2} = 5^{2} ⋅ (\sqrt{8})^{2} - 2 ⋅ (\sqrt{3})^{2} = 25 ⋅ 8 - 2 ⋅ 3 = 194 \text{.}\)