Question

if x-1/x=4 then the value of x+1/x is​

Answer 1

Answer:

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Answer 2

Answer:

Given : x + 1/x = 4, and to find that ; x - 1/x

Using the formula ; (a − b)² = (a + b)² − 4ab

=> (x − 1/x)² = (x + 1/x)² - 4 * x * 1/x

=> (x − 1/x)² = 4² − 4

=> (x − 1/x)² = 12

=> (x − 1/x) = ± √(12)

=> (x − 1/x) = ± 2√(3)