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vadimvagaytsev
@vadimvagaytsev
December 2021
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3(x+y)квадрат-6xy помогите решить плиз
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биофизик
3(x+y)^2-6xy=3(x^2+2xy+y^2)-6xy=3x^2+6xy+3y^2-6xy=3(x^2+y^2)
2 votes
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vadimvagaytsev
спасибо))
mmb1
Verified answer
3(x+y)^2-6xy
3(x^2+2xy+y^2)-6xy
раскроим скобки: 3x^2+6xy+3y^2-6xy
6xy и -6xy сократятся и останется: 3x^2+3y^2
ответ 3x^2+3y^2
2 votes
Thanks 4
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Answers & Comments
Verified answer
3(x+y)^2-6xy3(x^2+2xy+y^2)-6xy
раскроим скобки: 3x^2+6xy+3y^2-6xy
6xy и -6xy сократятся и останется: 3x^2+3y^2
ответ 3x^2+3y^2