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
Use properties and operations to understand the different forms of rational and irrational numbers.
Perform all four arithmetic operations and apply properties to generate equivalent forms of rational numbers and square roots.