If \(x = 2t\) and \(y = \dfrac{t}3,\) what is the value of \(x^2 - y^2?\)

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If \(x = 2t\) and \(y = \dfrac{t}3,\) what is the value of \(x^2 - y^2?\)

(1) \(t^2 - 3 = 6\)
(2) \(t^3 = -27\)

Answer: D

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