215 If a+b+c=6 and ab+bc+ca = 11, find a'^2+b^2+c^2 – InterviewSolution

1.	215 If a+b+c=6 and ab+bc+ca = 11, find a'^2+b^2+c^2
Answer» :DGiven: a + b + c = 6, ab + BC + CA = 11(a + b + c)² = a² + b² + c² + 2(ab + bc + ca)6² = a² + b² + c² + 2(11)36 = a² + b² + c² + 22a² + b² + c² = 14

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