Question

please do this and give answee

Answer 1

Answer:

Option(2)

Step-by-step explanation:

Given: a² + b² + c² = 50 and a + b + c = 2.

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

⇒ (2)² = 50 + 2(ab + bc + ca)

⇒ 4 = 50 + 2(ab + bc + ca)

⇒ 4 - 50 = 2(ab + bc + ca)

⇒ -46 = 2(ab + bc + ca)

⇒ -23 = ab + bc + ca.

Therefore, ab + bc + ca = -23.

Hope it helps!

Answer 2

$\underline{\underline{\Huge\mathfrak{Answer ;}}}$

Dear ,

Your Answer is ; -23

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• Step by Step Explanation ;-
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Given ;-
• a^2 + b^2 + c^2 = 50
• a + b + c = 2.

We are well aquinted that ;-

• ( a +b + c )^2 = a^2 + b^2 + c^2 + 2ab + 2bc + 2ca respectively.

So ,

=> {2}^2 = 50 + 2 ( ab + bc + ca )

=> 4 = 50 + 2 ( ab + bc + ca )

=> 4 - 50 = 2 ( ab + bc + ca )

=> -46 = 2 ( ab + bc + ca )

=> -23 = ( ab + bc + ca )

$<b>$Hence ,

=> ab + bc + ca = -23.

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