15mn-2n+15m(в квадрате)-2m

Question

15mn-2n+15m(в квадрате)-2m

Answer 1

(15m^2+15mn)-(2m+2n)=15m*(m+n)-2*(m+n)=(m+n)*(15m-2).

Answer 2

15m(n+m)-2(n+m)
15m-2(n+m)