Question

If
${x}^{2} + \frac{1}{ {x}^{2} } = 18$
 then find the values of 
$x + \frac{1}{x}$
and
$x - \frac{1}{x}$
​

Answer 1

Answer:

x+1/x = ±4

x-1/x = ±2√5

Step-by-step explanation: The explaination is given in the figure.

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