Question

if a+b+c=6 and a square + b square + c square = 14 then find the value of ab + bc + ca​

Answer 1

Answer:

ab+bc+ca=>22+22+22=>66

Answer 2

Step-by-step explanation:

(a+b+c)²=a²+b²+c²+2(ab+bc+ac)

2(ab+bc+ac)=(a+b+c)²-(a²+b²+c²)

2(ab+bc+ac)=(6)²-(14)

2(ab+bc+ac)=36-14

2(ab+bc+ac)=22

ab+bc+ac=11