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प्रश्न
Factorize each of the following expression:
(x + y)2 − (a − b)2
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उत्तर
\[(x + y )^2 - (a - b )^2 \]
\[ = [(x + y) - (a - b)][(x + y) + (a - b)]\]
\[ = (x + y - a + b)(x + y + a - b)\]
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