Nonlinear Functions

SAT Math· difficulty 3/5

x^{-2/3}

A
$\dfrac{1}{x^{2/3}}$
B
$-\sqrt[3]{x^2}$
C
$\sqrt[3]{x^2}$
D
$\dfrac{1}{\sqrt[3]{x^2}}$
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Explanation

x^{-2/3} = \dfrac{1}{x^{2/3}} = \dfrac{1}{\sqrt[3]{x^2}}

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