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Which expression is equivalent?

Which expression is equivalent?-example-1

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Answer:


( { {x}^{ (1)/(2)} {y}^{ - (1)/(4) } z })^( - 2) = {x}^( - 1) {y}^{ (1)/(2) } {z}^( - 2) =


\frac{ {y}^{ (1)/(2) } }{x {z}^(2) }

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