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प्रश्न
Factorise the following by the difference of two squares:
(x + y)2 -1
योग
उत्तर
(x + y)2 - 1
= (x + y)2 - (1)2
= (x + y + 1)(x + y - 1).
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Method of Factorisation : Difference of Two Squares
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