1) 3a^2+7a+2=3a^2+6a+a+2=(3a^2+6a)+a+2=3a(a+2)+(a+2)=(a+2)(3a+1)
2) 3-11m+6m^2=3-9m-2m+6m^2=(6m^2-9m)-(2m-3)=3m(2m-3)-(2m-3)=(2m-3)(3m-1)
3)5b^2-7b+2=5b^2-5b-2b+2=(5b^2-5b)-(2b-2)=5b(b-1)-2(b-1)=(b-1)(5b-2)
1) 3a^2+7a+2=3a^2+6a+a+2=(3a^2+6a)+a+2=3a(a+2)+(a+2)=(a+2)(3a+1)
2) 3-11m+6m^2=3-9m-2m+6m^2=(6m^2-9m)-(2m-3)=3m(2m-3)-(2m-3)=(2m-3)(3m-1)
3)5b^2-7b+2=5b^2-5b-2b+2=(5b^2-5b)-(2b-2)=5b(b-1)-2(b-1)=(b-1)(5b-2)