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maksimandreev123
@maksimandreev123
July 2022
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Разложите на множители:
а) a(b-1)-(1-b)
б)(a+b)+3a(a+b)
в)2x(a-b)-(b-a)
e)a-b-x(b-a)
ж)(x-1)^2+(x-1)
з)(x+2)^2-(x+2)(x-1)
И)(2x-1)^2-x(x-1)
к) (3x-1)^2+(x+2)(3x-1)
л) (x-1)(x+1)+(x-3)(x+1)
м)(x-2)(x+2)_(x+2)(x-1)
н) (x-3)(2x+3)-(3-x)(x+1)
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Answers & Comments
ekaterinkamiss
1)=ab-a-1+b
2)=-a-b+3a^2+3ab
3)=2xa-2xb-b+a
4)=a-b-xb+xa
5)=x^2-2x+1-x+1
6)=x^2+4x+4-(x^2-x+2x-2)=x^2+4x+4-x^2+x-2x+2=2x+6
7)4x^2-4x+1-x^2+x+3x^2-3x+1
8)9x^2-6x+1+3x^2-x+6x-2=6x^2-x-1
9)x^2+x-x-1+(x^2+x-3x-3)=x^2+x-x-1-x^2-x+3x+3=2x+2
10)x^2+2x-2x-4+(x^2-x+2x-2)=x^2+2x-2x-4-x^2+x-2x+2=-x-2
11)2x^2+3x-6x-9-(3x+3-x^2-x)=2x^2+3x-6x-9-3x-3+x^2+x=3x^2-5-12
2 votes
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Answers & Comments
2)=-a-b+3a^2+3ab
3)=2xa-2xb-b+a
4)=a-b-xb+xa
5)=x^2-2x+1-x+1
6)=x^2+4x+4-(x^2-x+2x-2)=x^2+4x+4-x^2+x-2x+2=2x+6
7)4x^2-4x+1-x^2+x+3x^2-3x+1
8)9x^2-6x+1+3x^2-x+6x-2=6x^2-x-1
9)x^2+x-x-1+(x^2+x-3x-3)=x^2+x-x-1-x^2-x+3x+3=2x+2
10)x^2+2x-2x-4+(x^2-x+2x-2)=x^2+2x-2x-4-x^2+x-2x+2=-x-2
11)2x^2+3x-6x-9-(3x+3-x^2-x)=2x^2+3x-6x-9-3x-3+x^2+x=3x^2-5-12