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E
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Difficulty—
If \(\sqrt{x}=y,\) which of the following could be equal to \(\dfrac1{(x^{-2})^{-2}}?\)
A. \(y^{-8}\)
B. \(y^{-4}\)
C. \(y^{-2}\)
D. \(y\)
E. \(y^2\)
Answer: A
Source: e-GMAT
A. \(y^{-8}\)
B. \(y^{-4}\)
C. \(y^{-2}\)
D. \(y\)
E. \(y^2\)
Answer: A
Source: e-GMAT
