Question

Answers please
I will mark u as brainlist

Answer 1

Answer:

The answer is 6. Please mark me brainliest. Hope it helps you.

Step-by-step explanation:

a) a² + b² + c²

= 1² + 2² + 3²

= 1 + 4 + 9 = 14

b) ab +bc +ca

 = (1 x 2) + ( 2 x 3) + (3 x 1)

 = 2 + 6 + 3 = 11

Given,

a + b + c

1 + 2 + 3

= 6