x²+ 1/x²=2 ,find x⁶=?
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x² + 1 / x² = 2
x² + 1 = 2x²
1 = 2x²-x²
1 = x²
x^6 = 1
x² + 1 = 2x²
1 = 2x²-x²
1 = x²
x^6 = 1
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