Using the standard formulae, expand: (2 x^2+3 x^2 ) (2 x^2-3 x^2 … - Vidyadip

Question

Using the standard formulae, expand:
$\left(2 x^2+\frac{3}{x^2}\right)\left(2 x^2-\frac{3}{x^2}\right)$

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Answer

$4 x^4-\frac{9}{x^4}$

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