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Natalystar
@Natalystar
July 2022
2
8
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(х+у) во второй степени -(х-у) во второй степени
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diana29102004
1)x в квадрате +2xy +y в квадрате
2) -(x-y)в квадрате =-xв квадрате + 2xy-yв квадрате
1 votes
Thanks 2
Natalystar
я забыла подписать это надо упростить
Kristina1234718
(x+y)²=x²+2xy+y²
-(x-y)=-(x²-2xy+y²)=-x²+2xy-y²
2 votes
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Answers & Comments
2) -(x-y)в квадрате =-xв квадрате + 2xy-yв квадрате
-(x-y)=-(x²-2xy+y²)=-x²+2xy-y²