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@77477625328
June 2022
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Решите уранение: (x+4)²-(x-2)(x+2)=0
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Kaleb
1) (х+4)^2=х^2+8х+16
2) (х-2)(х+2)=х^2-4
3) объединяем, не забывая про знаки
х^2+8х+16-(х^2-4)=0
х^2+8х+16-х^2+4=0
8х+20=0
8х=-20
х=-20/8
х=-5/2
х=-2,5
Ответ: х=-2,5
1 votes
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Answers & Comments
2) (х-2)(х+2)=х^2-4
3) объединяем, не забывая про знаки
х^2+8х+16-(х^2-4)=0
х^2+8х+16-х^2+4=0
8х+20=0
8х=-20
х=-20/8
х=-5/2
х=-2,5
Ответ: х=-2,5