x=3+√8 then the value of x²+1/x²

1.	x=3+√8 then the value of x²+1/x²
Answer» x = 3+ √8x = (3+√8)(3-√8) / (3-√8)x = (9 -8) / (3-√8)x = 1/ (3 -√8)Or we can write\xa01/x = (3-√8)Put the value and find outx² +(1/x²) = x² + (1/x)²So x² + 1/ x² = (3 +√8)² + (3 -√8)²= 9+6√8+8 + 9–6√8+8=\xa034.\xa0 (3+ under root 8)^2 + 1/(3+ under root 8)^2

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