ln Delta ABC,(r_(1)-r)(r_(2)-r)(r_(3)-r)=

In Delta ABC, (r_1-r)(r_2-r)(r_3-r)=

In a triangle ABC,(r_(1)-r)(r_(2)-r)(r_(3)-r) is equal to -

In Delta ABC, (r_1+r_2)(r_2+r_3)(r_3+r_1)=

In Delta ABC, r_1r_2r_3=

In a triangle ABC,(r_(1)-r)/(a)+(r_(2)-r)/(b)+(r_(3)-r)/(c)=

If r_(1),r_(2),r_(3),r are in usual notation in Delta ABC then r_(1)r_(2)r_(3)-r(r_(1)r_(2)+r_(2)r_(3)+r_(3)r_(1))=

In Delta ABC,r (r_1+r_2+r_3)=

In any triangle ABc, r_(1)r_(2)+r_(2)r_(3)+r_(3)r_(1)=

In any triangle ABC, r_(1),r_(2)+r_(2)r_(3)+r_(3)r_(1)=....