Question

If (a+b+c)=6 and a^2 + b^2 +c^2 =26 then find the value of ab+bc+ca

Answer 1

Answer:

Hello mate ✌️

Step-by-step explanation:

value of ab+bc + ca WILL BE 5.

hope it will be helpful to you ✌️✌️

itz Essar 03 ❤️

Answer 2

$(a+b+c)^2=a^2+b^2+c^2+2ab+2bc+2ca\\since[a+b+c=6;a^2+b^2+c^2=26]\\(6)^2=26+2(ab+bc+ca) \\ 36-26=2(ab+bc+ca)\\10/2=ab+bc+ca\\5=ab+bc+ca\\Answer=5\\\\ab+bc+ca=5$pls mark as  brainliest if it helps