Question

УПРОСТИТЬ 2м(м-1)+(м-2)+м

Answer 1

 $2m(m-1)+(m-2)+m= \ =2m^{2}-2m+m-2+m= \ =2m^{2}-2=2(m^{2}-1)=2(m-1)(m-2)$

 $2m(m-1)+(m-2)*(m+2)+2m= \ =2m^{2}-2m+m^{2}-4+2m= \ =3m^{2}-4$

Answer 2

спасибо