Question

Find the value of a²+b²+c² when a+b+c=✓17 and ab+bc+ca=2

Answer 1

Answer:

a² + b² + c² = 13

Step-by-step explanation:

We know that:

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

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

⇒ (√17)² = a² + b² + c² + 2( 2 )

⇒ 17 =  a² + b² + c² + 4

⇒ a² + b² + c² = 17 - 4

∴ a² + b² + c² = 13

Answer 2

Step-by-step explanation:

given in picture hi I am Jashan (just to fulfill the minimum character requirement)