Write the Word or Phrase That Best Completes Each Statement $$\frac { \sqrt [ 4 ] { ( x + 7 y ) ^ { 5 } } } { \sqrt [ 5 ] { ( x + 7 y ) ^ { 4 } } }$$

Essay

Write the word or phrase that best completes each statement or answers the question.
- $$\frac { \sqrt [ 4 ] { ( x + 7 y ) ^ { 5 } } } { \sqrt [ 5 ] { ( x + 7 y ) ^ { 4 } } }$$