September 2021 1 29 Report
Разложите на множители и выберите правильный вариант ответа (12 баллов):
81 a ^2- (23 - 8a)^2
1.(a - 23) (17a + 23)
2.(a + 23) (a - 23)
3.(17a - 23) (a +230
4.(a^2 - 23)^2
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