Step-by-step explanation:
In Spte 4, he used the rational exponet rule which gave him.
[tex] \sqrt[3]{5 {}^{4} } [/tex]
He then, by definition of an exponet rewrite 5^4 inside the radical as
[tex] \sqrt[3]{5 \times 5 \times 5 \times 5} [/tex]
Since this a cube root root we have three 5, we cancel out those 5 and write only one on the outside of the radicand.
[tex]5 \sqrt[3]{5} [/tex]
2. The rational exponent property and radicand rules allows us to do this.
3/4. You can look up examples of one.
