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Natsumi11
@Natsumi11
May 2021
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Разложите на множители(Помогите пожалуйста)
1) (а+9)²+2а(а+9) ; 5) (а+b)³-a(a+b)²;
2) 30х³°+80х³°; 6) 12m(m-n)-6n(n-m);
3) х²(b-2)+у(2-b); 7) m(x-y)-n(y-x);
4) 2m(a-3)-5c(3-a); 8) (x-y)²+x-y.
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Answers & Comments
red321
1) (а+9)²+2а(а+9)=(a+9)(a+9+2a)=(a+9)(3a+9)
2)
30х³°+80х³°=10х³°(3+8)
3)х²(b-2)+у(2-b)=х²(b-2)-у(b-2)=(b-2)(x²-y)
4)2m(a-3)-5c(3-a)=
2m(a-3)+5c(a-3)=(a-3)(2m+5c)
5)
(а+b)³-a(a+b)²=(a+b)²(a+b-a)=b(a+b)²
6)12m(m-n)-6n(n-m)=12m(m-n)+6n(m-n)=6(m-n)(2m+n)
7)m(x-y)-n(y-x)=
m(x-y)+n(x-y)=(x-y)(m+n)
8)(x-y)
²+(x-y)=(x-y)(x-y+1)
3 votes
Thanks 9
livana
7) m(x-y)-n(y-x);
mx-my-ny+nx
1) (а+9)²+2а(а+9)
а2+18а+81+2а2+18а
6)12m(m-n)-6n(n-m);
12m2-12mn-6n2+6nm
8) (x-y)²+x-y.
x2+2xy-y2+x-y
3 votes
Thanks 3
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Answers & Comments
2)30х³°+80х³°=10х³°(3+8)
3)х²(b-2)+у(2-b)=х²(b-2)-у(b-2)=(b-2)(x²-y)
4)2m(a-3)-5c(3-a)=2m(a-3)+5c(a-3)=(a-3)(2m+5c)
5)(а+b)³-a(a+b)²=(a+b)²(a+b-a)=b(a+b)²
6)12m(m-n)-6n(n-m)=12m(m-n)+6n(m-n)=6(m-n)(2m+n)
7)m(x-y)-n(y-x)=m(x-y)+n(x-y)=(x-y)(m+n)
8)(x-y)²+(x-y)=(x-y)(x-y+1)
mx-my-ny+nx
1) (а+9)²+2а(а+9)
а2+18а+81+2а2+18а
6)12m(m-n)-6n(n-m);
12m2-12mn-6n2+6nm
8) (x-y)²+x-y.
x2+2xy-y2+x-y