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Question
Difficulty Level:

Easy

MCQ

Rewrite the expression 1b27\frac{1}{b^{\frac{2}{7}}} in the form bnb^{n}.

Select all that apply :

b27b^{-\frac{2}{7}}

b27b^{\frac{2}{7}}

b72 b^{\frac{7}{2}}

b72b^{-\frac{7}{2}}

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