Question

If a +b +c =9 and ab +bc
2 points
+ca=40, then a² + b2 + c2 will
be *
O o
O 1
O-31
O 41​

Answer 1

We know that,

(a + b + c)2 = a 2 + b 2 + c 2 + 2ab + 2bc + 2ca

⇒ a 2 + b 2 + c 2 = (a + b + c)2 – 2 (ab + bc + ca)

⇒ a 2 + b 2 + c 2 = (9)2 – 2 × 40 = 81 – 80 = 1 [a + b + c = 9 and ab + bc + ca = 40]

Thus, the value of a 2 + b 2 + c2 is 1 .

Answer 2

Step-by-step explanation:

thank you for your time and phone number is it won't work for you to be filled with water and phone number is it won't work for you to be filled by