Ответ:
Объяснение:
1) x+xy+a+ay=x(1+y)+a(1+y)=(1+y)(x+a);
2) 4+2m+2n+mn=2(2+m)+n(2+m)=(2+m)(2+n);
3) kt+t-2k-2 = t(k+1) - 2(k+1)=(k+1)(t-2);
4) ab+ac+7b+7c=a(b+c)+7(b+c)=(b+c)(a+7);
5) am+an+4m+4n = a(m+n)+4(m+n)=(m+n)(a+4);
6) xz+yz-3x-3y=z(x+y)-3(x+y)=(x+y)(z-3).
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Ответ:
Объяснение:
1) x+xy+a+ay=x(1+y)+a(1+y)=(1+y)(x+a);
2) 4+2m+2n+mn=2(2+m)+n(2+m)=(2+m)(2+n);
3) kt+t-2k-2 = t(k+1) - 2(k+1)=(k+1)(t-2);
4) ab+ac+7b+7c=a(b+c)+7(b+c)=(b+c)(a+7);
5) am+an+4m+4n = a(m+n)+4(m+n)=(m+n)(a+4);
6) xz+yz-3x-3y=z(x+y)-3(x+y)=(x+y)(z-3).