Simplify : (3 x-1 3 x )^2- (3 x+1 3 x ) (3 x-1 3 x ) - Vidyadip

Question

Simplify : $\left(3 x-\frac{1}{3 x}\right)^2-\left(3 x+\frac{1}{3 x}\right)\left(3 x-\frac{1}{3 x}\right)$

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Answer

$2\left(\frac{1}{9 x^2}-1\right)$

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