Question

If x = 5 - 2 root 6, find the value of root x + 1 / root x​

Answer 1

Answer:

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Step-by-step explanation:

x = 5 - 2√6

1/x = {1/(5 - 2√6)

⇒ 1/x = {1/(5 - 2√6)} × (5 + 2√6)/(5 + 2√6)

= (5 + 2√6)/25 - 24

= 5 + 2√6

Now,

(√x + 1/√x²) = x + 1/x + 2 × √x × 1/√x  

= x + 1/x + 2

⇒ √x + 1/√x = √x + 1/x + 2 (whole root)

= √5 - 2√6 + 5 + 2√6 + 2

= √5 + 5 + 2

= √12

Answer 2

Answer:

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