Question

If x= 7,
4 root 3 then find x+1/x

Answer 1

Answer:

Step-by-step explanation:

VALUE IS 0

Answer 2

Answer:

• 14

Step-by-step explanation:

Given

• x = 7 + 4√3

To find

• x + 1 / x

Solution

• x = 7 + 4√3
• 1 / x = 1 / 7 + 4√3 × 7 - 4√3 / 7 - 4√3

(Rationalizing the denominator)

• 7 - 4√3 / 7² - 4√3²
• 7 - 4√3 / 49 - 16 × 3
• 7 - 4√3 / 49 - 48
• 7 - 4√3

( + and - get cancelled)

∴ x + 1 / x = 7 + 4√3 + 7 - 4√3 = 14