- #1
PiRsq
- 112
- 0
How do you expand and simplify this one?
(2u+v).(u-2v)
=2u.u+2u.(-2v)+v.u+v.(-2v)
Where u and v are vectors and the "." is the dot. I did some but after this I am lost, how can I continue?
(2u+v).(u-2v)
=2u.u+2u.(-2v)+v.u+v.(-2v)
Where u and v are vectors and the "." is the dot. I did some but after this I am lost, how can I continue?