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kirasan55
@kirasan55
September 2021
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Плиз помогите даю 70 баллов
1)Упростите выражение
(а-1)(а+2)-(3а+4)
2)Представьте в виде многочлена выражение (2+c)(2-c)+(c-3)^2-3(4-2c)
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yyukalo
Удачи нвдеус правилно==
2 votes
Thanks 2
AlbuRin
1) (a - 1) (a + 2) - (3a + 4) = a^2 + 2a - a - 2 - 3a - 4 =
= a^2 - 2a - 6
2) (2 + c) ( 2 - c) + (c - 3)^2 - 3(4 - 2c) = 4 - c^2 + c^2 - 6c + 9 - -12 + + 6c = 1
3 votes
Thanks 2
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Answers & Comments
= a^2 - 2a - 6
2) (2 + c) ( 2 - c) + (c - 3)^2 - 3(4 - 2c) = 4 - c^2 + c^2 - 6c + 9 - -12 + + 6c = 1