1.

Please factorise the above question and send it​

Answer»

Here is your ANSWER.

{x}^{2} - 2xy + {y}^{2} - {a}^{2} - 2ab - {b}^{2}

= ( {x}^{2} - 2xy + {y}^{2} ) - ( {a}^{2} + 2ab + {b}^{2} )

= {(x - y)}^{2} - {(a + b)}^{2}

= (x - y + a + b)(x - y - a - b)


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