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Question

Difficulty Level:

Easy

MCQ

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

Select all that apply :

$b^{-\frac{2}{7}}$

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

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

$b^{-\frac{7}{2}}$

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