Question

Find the value of ab+bc+ac, when a+b+c=l0 and a²+b²+c²=20​

Answer 1

Answer:

Uo namaste I namaste I namaste I was just a few things I do it on Monday morning baby dear

Answer 2

Answer:

We know that (a+b+c)^2=(a^2 +b^2 +c^2) +2(ab+bc+ca)—- -[1]

By Substituting the given values in [1],

(a+b+c)^2=20+2*40 = 20+80=100

(a+b+c)^2=100—»a+b+c=(+or-)10.