Question

1- (a - b)² = (1+a-b)×...........


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Answer 1

Answer:

$1 - {(a - b)}^{2} = {1}^{2} - {(a - b) }^{2} \\ = (1 - (a - b)) \times (1 + a - b) \\ = (1 - a + b)(1 + a - b)$

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Answer 2

Answer:

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