Question 92 (xxviii) Factorise the following using the identity a2−b – InterviewSolution

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Question 92 (xxviii) Factorise the following using the identity a2−b2=(a+b)(a−b). x4−y4+x2−y2

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Question 92 (xxviii)

Factorise the following using the identity $a^{2} - b^{2} = (a + b) (a - b) .$

$x^{4} - y^{4} + x^{2} - y^{2}$

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