1 Answer

Jason Denney · Answer 1 · 2019-08-01T19:59:11+0000

[x^(-1/3)]^2=[a^(-3)]^2
⇒ x^(-1/3)=a^(-3)

[y^1/3]^2=[b^3]^2
A^2=B^2 ⇒ A=B so
⇒ y^(1/3)=b^3

x^ (-1/3)*y^(-1/3)=x^(-1/3)/y^1/3=a^(-3)/b^3=a^(-3)*b^(-3)

cause b^(-3)=1/b^3 is the definition of negative power

the answer is b

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