Express $\sqrt{19}\times\sqrt{19}$√19×√19 as a single radical, ie. in the form $\sqrt{n}$√n.
Simplify: $\left(\sqrt{45}\right)^2$(√45)2
Simplify: $\sqrt{5}\times\sqrt{5}$√5×√5
Simplify: $\sqrt{2}\times\sqrt{11}$√2×√11
Apply and extend the properties of exponents to solve problems with rational exponents
Apply properties of rational and irrational numbers to solve real world or mathematical problems.