If x+1 x =5, then x-1 x = - Vidyadip

MCQ

If $x+\frac{1}{x}=5$, then $x-\frac{1}{x}=$

✓
$\pm \sqrt{21}$
B
$\pm \sqrt{29}$
C
$\pm 3$
D
$\pm 2$

✓

Answer

Correct option: A.

$\pm \sqrt{21}$

A

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