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Виталий0205
@Виталий0205
November 2021
1
5
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Подати у вигляді добудку:
а) 7а^2-42а+63;
б) 3с^2-48;
Дякую! 15 Балів.
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koingrel
Verified answer
7а^2 - 42а + 63 = 7(а^2 - 6а + 9) = 7(а-3)^2
3с^2 - 48 = 3(с^2 - 16) = 3(с-4)(с+4)
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Verified answer
7а^2 - 42а + 63 = 7(а^2 - 6а + 9) = 7(а-3)^23с^2 - 48 = 3(с^2 - 16) = 3(с-4)(с+4)