Question

if a+b+c=9 ab+bc+ca =26 find a²+b²+c² solution

Answer 1

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Hey Mate!!

According to the formula,

(a + b + c)² = a² + b² + c² + 2(ab + bc + ca)

By substituting values,

⇒ 9² = a² + b² + c² + 2(26)

⇒ 81 = a² + b² + c² + 52

⇒ a² + b² + c² = 81 - 52

⇒ a² + b² + c² = 29

Answer 2

Step-by-step explanation:

hope it is useful..

it is based on (a+b+c) ka hole square