Question

a^2+b^2+c^2=15 ab+bc+ca=11 find a+b+c plsssss ansr​

Answer 1

Step-by-step explanation:

a²+b²+c²=15

ab+bc+ca = 11

=> (a+b+c)² = a²+b²+c²+2(ab+bc+ac)

=> (a+b+c)² = 15 + 2*11

=> (a+b+c)² = 15+22

=> a+b+c = √37