Question

If a=3,b=-5 and c=6 then find the value of½[(a-b) 2 +(b-c) 2 +(c-a) 2 ]

Answer 1

The is "0" ..........

Answer 2

=1/2[(3+5)2+(-5-6)2+(6-3)2]
=1/2[16-22-6]
=1/2[16-28]
=1/2x-12
=-6