Using the standard formulae, expand: (2 x+3 x -1 )^2 - Vidyadip

Question

Using the standard formulae, expand:
$\left(2 x+\frac{3}{x}-1\right)^2$

✓

Answer

$4 x^2+\frac{9}{x^2}+13-\frac{6}{x}-4 x$

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