Question

answer this question

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Answer 1

Answer:

x² + 4/x² = 12

Step-by-step explanation:

x = 2 + √2

value of  1/x = 1/(2 + √2) = (2 - √2)/(2)

∴ x² + 4/x² = (2 + √2)² + 4[(2 - √2)/(2)]²

= (2 + √2)² + (2 - √2)²

= 4 + 2 + 4√2 + 4 + 2 - 4√2

= 12

Answer 2

Answer:

12

Step-by-step explanation: