1.

Factorise using idenrtity (a+b)^2 and (a-b)^2 x^2+2+1/x^2​

Answer»

ANSWER:

{x}^{2} + 2 + \frac{1}{ {x}^{2} } = {x}^{2} + ( \frac{1}{x} ) {}^{2} + 2 \times x \times \frac{1}{x} = (x + \frac{1}{x} ) {}^{2}


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