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प्रश्न
factorise : a2 - (b - c)2
योग
उत्तर
a2 - (b - c)2
= (a - (b - c)) (a + b - c) ...[a2 - b2 = (a - b)(a + b)]
= (a - b + c) (a + b - c)
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Factorisation by Difference of Two Squares
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