Question

a,b,c are three non zero vectors,
if , a.(a+b)=b.(a-c)
show that c.(a+b)=0

Answer 1

what are the a. b. and c.....are those like sub-question parts...or is that part of the question...

it like like...question 1 part a = a+b

or is it....a times (a+b)

Answer 2

a times a+b { dot product}