[tex] \sqrt{25} =5[/tex]
[tex] \sqrt{81} =9[/tex]
[tex] \sqrt{15^{2}} =15[/tex]
[tex] \sqrt{3^{10}} =(3^{10})^{ \frac{1}{2} }=3^{10*\frac{1}{2}}=3^{5}[/tex]
[tex] \sqrt{(-2)^{2}} = \sqrt{4}=2[/tex]
[tex] \sqrt{-3^{4,36*4}} =\sqrt{-3^{17,44}}=((-3)^{17,44})^{ \frac{1}{2} }=(-3)^{17,44*\frac{1}{2}}=(-3)^{8,74}[/tex]
[tex] \sqrt{(-72)*(-2)} = \sqrt{144}=12[/tex]
