The answer is :- AB + BC> AC -(1) ,CD+AC> DA -(2),ADDING BOTH ; AB + BC + CD +AC> AC +DA ; Therefore AB + BC + CD > DA

Log in to add a comment

Log in to add a comment

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.

Yes by taking an example of ab=5 bc=6 cd=7 da= 8

in the we are adding the three value 5+6+7=18

but the qusetion is posed these three are greater than this

in the we are adding the three value 5+6+7=18

but the qusetion is posed these three are greater than this