# If #A= <-2 ,4 ,3 ># and #B= <3 ,2 ,-8 >#, what is #A*B -||A|| ||B||#?

##### 1 Answer

Nov 18, 2016

-22-

#### Explanation:

Dot product A*B= (-2)(3) +4*2 +3(-8)= -6+8-24= -22

||A||=

||B||=

Now A*B- ||A|| ||B||= -22-

= -22-