Ответ:
2а²+12а-8а+9-а²-14а+16 / а²-25 = а²-10а +25 / а²- 25 = (а-5)² / (а-5)(а+5) = а-5 / а+5
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Ответ:
2а²+12а-8а+9-а²-14а+16 / а²-25 = а²-10а +25 / а²- 25 = (а-5)² / (а-5)(а+5) = а-5 / а+5