Ответ:) -1
(a-b)² / (b-a)² = (a+b)(a-b) / (b+a)(b-a) =
= (a-b) / (b-a) = -1 • (-a+b) / (b-a) = -1
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Ответ:) -1
(a-b)² / (b-a)² = (a+b)(a-b) / (b+a)(b-a) =
= (a-b) / (b-a) = -1 • (-a+b) / (b-a) = -1