Question

a=2b=2c find the value of each

Answer 1

Answer:

Your answer is attached above

Answer 2

Step-by-step explanation:

a 2 + b 2 + c 2 - 2 a b - 2 b c - 2 b (-2 c a-) 3 a b c = ( 2) 2+(3) 2 + ( - 2) 2 - 2 × 3- 2 ×3×-2 - 2 × 2 + 3 × 2 × 3 - 2

= 4 + 9 +4 - 12 + 12 + 8 - 36

= 25 - 36 =11