\(\sqrt{1} = 1\)

\(\sqrt{9} = 3\)

\(\sqrt{169} = 13\)

\(\sqrt{9} + \sqrt{81} = 3 + 9 = 12\)

\(10 \sqrt{36} - 5 \sqrt{121} = 10 ⋅ 6 - 5 ⋅ 11 = 5\)

\(\sqrt{16} ⋅ \sqrt{9} = 4 ⋅ 3 = 12\)

\(\sqrt{5^{2} + 56} = \sqrt{25 + 56} = \sqrt{81} = 9\)

\(-\sqrt{100} = -10\)

\(\sqrt{-49}\) kan niet.

\(\sqrt{12^{2}} = 12\)

\(\sqrt{(-5)^{2}} = \sqrt{25} = 5\)

\(5 ⋅ \sqrt{81} = 5 ⋅ 9 = 45\)

\({9 \sqrt{3} \over 4} = 2\frac{1}{4} \sqrt{3} \text{.}\)

\(7 \sqrt{3} - 10 \sqrt{3} = -3 \sqrt{3}\)

\(6 \sqrt{10} + 10 \sqrt{11}\) kan niet korter.

\(3 \sqrt{8} ⋅ 2 \sqrt{2} = 6 ⋅ \sqrt{16} = 6 ⋅ 4 = 24\)

\(2 \sqrt{5} ⋅ 4 \sqrt{3} = 8 \sqrt{15}\)

\({\sqrt{35} \over \sqrt{5}} = \sqrt{7}\)

\({4 \sqrt{12} \over \sqrt{2}} = 4 ⋅ {\sqrt{12} \over \sqrt{2}} = 4 \sqrt{6}\)

\({28 \sqrt{18} \over 7 \sqrt{2}} = {28 \over 7} ⋅ {\sqrt{18} \over \sqrt{2}} = 4 ⋅ \sqrt{9} = 4 ⋅ 3 = 12\)

\((-2 \sqrt{6})^{2} = (-2)^{2} ⋅ \sqrt{6}^{2} = 4 ⋅ 6 = 24 \text{.}\)

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

\(9 (\sqrt{10})^{2} = 9 ⋅ 10 = 90 \text{.}\)

\((-5 \sqrt{3})^{2} - 2 (\sqrt{7})^{2} = (-5)^{2} ⋅ (\sqrt{3})^{2} - 2 ⋅ (\sqrt{7})^{2} = 25 ⋅ 3 - 2 ⋅ 7 = 61 \text{.}\)