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AngEl20000809
@AngEl20000809
July 2022
1
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Помогите решить срочно!
а) 28-7у^2
б) 11х^2-22х+11
в) 5х^3-5у^3
г) 81m^4-16n^4
Уравнение
3х^3-27х=0
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inkognito15
1) 7(4-y^2)=7(2-y)(2+y). 2) 11x^2-22x+11=0 => x^2-2x+1=0 D: b^2-4ac => d: 4-4=0. => x= -b/2a= 2/2=1. 3) 5x^3-5y^3=5(x^3-y^3)=5(x-y)(x^2+xy+y^2. 4
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