please help it and show all the work please help

Answer:
[tex]\sqrt[n]{x} => n \ is \ the \ index \ and \ x \ is \ the \ radicand\\\\1. b) -23^7\\\\2. a) 2\\\\3. b) \sqrt{3} \cdot\sqrt{2} =\sqrt{6}[/tex]
For q1 and q2 I have given explanation already.
q3 to multiply radicals the index must be same.
option a . different index. ∛5 √2
option b . same index so √3 √2 = √6
option c. again different index.