Question

fin the value of
$(x \ + \frac{1}{x} ) ^{2} - (x - \frac{1}{x} ) ^{2}$
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Answer 1

Answer:

(x+1/x)^2-(x-1/x)^2

=4 × x × 1/x [(a+b)^2-(a-b)^2=4ab]

=4

Answer 2

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Q:-find the value of

$(x \ + \frac{1}{x} ) ^{2} - (x - \frac{1}{x} ) ^{2}$

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Here this formula is used:-

>>(a+b)^2=a^2+b^2+2ab

>>(a-b)^2=a^2+b^2-2ab

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HOPE IT HELPS YOU..

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Thankyou:)