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olga240702al
@olga240702al
November 2021
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Решите примеры!!!!
Алгебра 7 класс
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askovas
Не все знаю отсюда, но все же
0 votes
Thanks 1
Aiga21
1)a²-16-6a+2a²=-6a-16
2)a²-7a-8a+56-(a²-18a+81)=a²-15a+56-a²+18a-81=3a-25
3)b²-9+4b²+12b+9=4b²+12b
4)4x²-(x²-6xy+9y²)=4x²-x²+6xy-9y²=3x²+6xy-9y²
5)a²+a-5a-5-a²-a-6a+6=-a+1
0 votes
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Answers & Comments
2)a²-7a-8a+56-(a²-18a+81)=a²-15a+56-a²+18a-81=3a-25
3)b²-9+4b²+12b+9=4b²+12b
4)4x²-(x²-6xy+9y²)=4x²-x²+6xy-9y²=3x²+6xy-9y²
5)a²+a-5a-5-a²-a-6a+6=-a+1