Question

254. If
$a { }^{2} + b {}^{2} + c {}^{2} - ab - bc - ca = 0 \:$
then a : b : c is
(a) 1:1:2
(b) 1:1:1
(c) 1:2:1
(d) 2:1:1​

Answer 1

Answer:

b) 1:1:1

Step-by-step explanation: