If x-1/X=8 , then the value of x² + 1/x² is what?
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Answer:
66
Step-by-step explanation:
==: x - 1/x = 8
Square both sides
==: (x - 1/x)² = (8)²
==: x² + 1/x² - 2 = 64
==: x² + 1/x² = 66
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