SOLUTION: I am not understanding multiplying radical expressions: (2-3 cubed root 7) (5+2 cube root 7)

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Question 64296This question is from textbook
: I am not understanding multiplying radical expressions:
(2-3 cubed root 7) (5+2 cube root 7) This question is from textbook

Answer by jayanthi@knowledgeonlineservices.com(5) About Me  (Show Source):
You can put this solution on YOUR website!
2-3cube root7/5+2cuberoot7
=-cuberoot7/7cuberoot7
1/7