Question

1) ax-3bx-cx;
2)-bm-bn-bk;
3)2dx-6dy-dn;
4)-5²+20nx-15ny;

Answer 1

Ответ:

x×(a-3b-c)

-b×(m+n+k)

d×(2x-6y-n)

-25+20nx-15ny