Math, asked by keshavkaushik55555, 5 months ago

If
² +
1 /x² =7
, find the value of x - 1/x

Answers

Answered by mhanifa

1

Answer:

±√5

Step-by-step explanation:

x² + 1/x² = 7
x² - 2*x*1/x + 1/x² = 7 - 2
(x - 1/x)² = 5
x - 1/x = ±√5

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