If a2 - 1-a2 - 11-find-a - 1-a

(a 1/a)^2 = a^2 + 1/a^2 2 ⇒(a 1/a)^2 = 11 2 ⇒(a 1/a)^2 = 9 ⇒ a 1/a = √(9) ⇒ a 1/a = 3. ...

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Expansion of (x-y)^2

If a2 + 1/a2 ...

Question

If $a^{2} + \frac{1}{a^{2}} = 11; f i n d a - \frac{1}{a}$

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