1.

If \(x = \frac{{1\; + \;\sqrt 3 }}{2}\) and y = x3, then y satisfies which one of the following equations?

A. 8y2 – 20y – 1 = 0
B. 8y2 + 20y – 1 = 0
C. 8y2 + 20y + 1 = 0
D. 8y2 – 20y + 1 = 0
Answer» B. 8y2 + 20y – 1 = 0


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