\(\sqrt{0}=0\)

\(\sqrt{49}=7\)

\(\sqrt{144}=12\)

\(\sqrt{9}+\sqrt{64}=3+8=11\)

\(4\sqrt{36}+5\sqrt{4}=4⋅6+5⋅2=34\)

\(\sqrt{81}⋅\sqrt{49}=9⋅7=63\)

\(\sqrt{7^2+72}=\sqrt{49+72}=\sqrt{121}=11\)

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

\(\sqrt{-100}\) kan niet.

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

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

\(4⋅\sqrt{4}=4⋅2=8\)

\({2\sqrt{3} \over 7}=\frac{2}{7}\sqrt{3}\text{.}\)

\(7\sqrt{3}-\sqrt{3}=6\sqrt{3}\)

\(6\sqrt{10}+8\sqrt{11}\) kan niet korter.

\(2\sqrt{2}⋅4\sqrt{50}=8⋅\sqrt{100}=8⋅10=80\)

\(6\sqrt{2}⋅2\sqrt{19}=12\sqrt{38}\)

\({\sqrt{42} \over \sqrt{6}}=\sqrt{7}\)

\({9\sqrt{9} \over \sqrt{3}}=9⋅{\sqrt{9} \over \sqrt{3}}=9\sqrt{3}\)

\({54\sqrt{40} \over 6\sqrt{10}}={54 \over 6}⋅{\sqrt{40} \over \sqrt{10}}=9⋅\sqrt{4}=9⋅2=18\)

\((8\sqrt{6})^2=8^2⋅\sqrt{6}^2=64⋅6=384\text{.}\)

\((\sqrt{3})^2=3\text{.}\)

\(-3(\sqrt{10})^2=-3⋅10=-30\text{.}\)

\((-5\sqrt{6})^2-2(\sqrt{3})^2=(-5)^2⋅(\sqrt{6})^2-2⋅(\sqrt{3})^2=25⋅6-2⋅3=144\text{.}\)