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zhorakrutov
@zhorakrutov
August 2022
2
5
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упрости выражение
а) (х-3)(х-7)-2х(3х-5)
б) 4а(а-2)-(а-4)в квадрате
в) 2(м+1)в квадрате -4м
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TheShiget0
Verified answer
А) x^2-7x-3x+21-6x^2+10x=-5x^2+21
б) 4а^2-8а-а+4=4а^2-9а+4
2(м+1)(м+1)-4м=2(м^2+2м+1)-4м=2м^2+4м+2-4м=2м^2+2=2(м^2+1)
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TheShiget0
Кинь на мен нарушение, я не дописал
mukus13
Verified answer
A)
б)
в)
1 votes
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Answers & Comments
Verified answer
А) x^2-7x-3x+21-6x^2+10x=-5x^2+21б) 4а^2-8а-а+4=4а^2-9а+4
2(м+1)(м+1)-4м=2(м^2+2м+1)-4м=2м^2+4м+2-4м=2м^2+2=2(м^2+1)
Verified answer
A)б)
в)