Question

Q14)If a+b+c = 9 and ab+bc+ac = 23 find the value of a^2+ b^2 +c^2?​

Answer 1

Answer:

35

Step-by-step explanation:

if a+ b+ c=9

and ab+ bc+ ca=23

now,

(a+b+c)² = a² + b² + c²+2(ab+bc+ca)

(9)² = a² + b² + c²+2 (23)

81 = a² + b² + c²+ 46

81-46 = a² + b² + c²

35 = a² + b² + c²