Разложите на множители: 1) 35a^2-42ab+10a^2b-12ab^2 2) x^3+x^2y+x^2+xy 3) mn^4-n^4+mn^3-n^3
1)=a*(35a-42b+10ab-12b^2) a*(7(5a-6b)+2b*(5a-6b)) a*(7+2b)*(5a-6b) 2)=x*(x^2+xy+x+y) x*((x*(x+y)+x+y) x*(x+1)*(x+y) 3)=n^3*(mn-n+m-1) n^3*(m*(n+1)-(n+1)) n^3*(m-1)*(n+1)