Question

a+b+c=12 and ab+BC+ca=22 find a square +b square+c square

Answer 1

(a+b+c)² =a²+b²+c² +2(ab +bc +ca)
144= a²+b²+c² +2(22)
144 =a²+b² +c² +44
144 - 44 =a²+b²+c²
a²+b²+c²=100

Answer 2

your answer is this a square plus b square plus c square is equal to 100