Question

If a+b+c=9 and ab+bc+ca=24, find a^2+b^2+c^2​

Answer 1

Answer:

(a+b+c)² = a² + b² + c² + 2(ab+bc+ca)

9² = a² + b² + c² + 2(24)

81 = a² + b² + c² + 48

81-48 = a² + b² + c²

33 = a² + b² + c²

Step-by-step explanation: