Question

please solve with explation in copy .. .... ​

Answer 1

im vietnamese  people so my grammarly will be uncorrect. Sorry for this.

1. We have : BM+CM = BC .

In ∆ABM we have : AB+BM>AM

In ∆ACM we have AC+CM>AM

=> AB+AC+BM+CM>AM+AM

=>AB+BC+CA>2AM

2. Very sorry i don't understand  the question.

3.

-2,9;-2,8;-2,7;-2,6;-2,5