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sonyaberkut4
@sonyaberkut4
June 2022
2
5
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разложите на множители:
1) ab-2b
2) 2(с+5)-а(с+5)
3) 8х^3-4x^4
4) 3а-3с+ха-хс
упростите выражение: (а-4)^2- 2а(3а-4)
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Answers & Comments
zhenyaM2002
Verified answer
Ab -2b= b(a-2)
2(c+5)-a(c+5) = (2-a)(c+5)
8x³-4x⁴= 4x³(2 - x)
3a-3c+xa-xc = 3(a-c) +x(a-c) = (3+x)(a-c)
(a-4)²-2a(3a-4) = a² -2*a*4 +4² -2a*3a-2a*(-4) =
=a² -8a +16 - 6a² + 8a = (a²-6a²) +(-8a+8a) + 16=
= -5a²+16
3 votes
Thanks 2
danastahich
1) b(a-2)
2) (2-a)(c+5)
3) 4x^3(2-x)
4) (3a-3c)+(xa-xc)=3(a-c)+x(a-c)=(3+x)(a-c)
1 votes
Thanks 1
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Answers & Comments
Verified answer
Ab -2b= b(a-2)2(c+5)-a(c+5) = (2-a)(c+5)
8x³-4x⁴= 4x³(2 - x)
3a-3c+xa-xc = 3(a-c) +x(a-c) = (3+x)(a-c)
(a-4)²-2a(3a-4) = a² -2*a*4 +4² -2a*3a-2a*(-4) =
=a² -8a +16 - 6a² + 8a = (a²-6a²) +(-8a+8a) + 16=
= -5a²+16
2) (2-a)(c+5)
3) 4x^3(2-x)
4) (3a-3c)+(xa-xc)=3(a-c)+x(a-c)=(3+x)(a-c)