Ava45018
Ava45018
31-03-2018
Mathematics
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dannielle
dannielle
31-03-2018
[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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