9. Find I x I, if for a unit vector a, (x – a).(x + a) = 12. (x - a).(x + a) = 12. 9. Find I x I if for a unit vector a November 5, 2021 Category: Chapter 10 - Vector Algebra , Maths , NCERT Exemplar Class 12 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related