Question

If x=3+underoot 8 find the value of x^2+1/x^2

Answer 1

Step-by-step explanation:

x=3+1/√8

x=3+1/2√2

x²+1/x²=(x+1/x)²-2

=[3+1/2√2 + 1/(1/2√2+3)]²-2

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