Assuming $m$m is a non-negative number, simplify the expression:$\sqrt{m^4}$√m4
Express your answer as a positive exponent.
Simplify $3\sqrt{81}$3√81.
Consider the expression $\sqrt{19}$√19.
Consider the expression $7\sqrt{50}$7√50.
Explain how the definition of the meaning of rational exponents follows from extending the properties of integer exponents to those values, allowing for a notation for radicals in terms of rational exponents.