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Yanakawai15
@Yanakawai15
August 2022
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Помогите пожалуйста решить 2 выражения, дам 30 баллов.
необходимо представить в виде многочлена, используя формулы (a+b)²=a²+2ab+b²; (a-b)²=a²-2ab+b²:
1) (-7a-3b)²
2) (-7y+1/7x)²
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Ticher1997
Ответ:
=-49 y^2+2xy-1/49 y^2
1 votes
Thanks 1
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Answers & Comments
Ответ:
=-49 y^2+2xy-1/49 y^2