Question

find the product by using the identites of algebric expressions and identities​

Answer 1

$(x - \frac{1}{x} ) {}^{2} \\ ( a - b) {}^{2} = {a}^{2} - 2ab + {b}^{2} \\ here, \\ a = x, \: b = \frac{1}{x} \\ \\ (x - \frac{1}{x} ) {}^{2} = {x}^{2} - 2(x)( \frac{1}{x} ) +( { \frac{1}{x} })^{2} \\ = {x}^{2} - 2 + \frac{1}{ {x}^{2} }$

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