# If A= <8 ,-5 ,-3 > and B= <5 ,4 ,-9 >, what is A*B -||A|| ||B||?

Feb 23, 2016

47 $-$ sqrt11956 = $-$ 62.3435, nearly.

#### Explanation:

A.B is the cross product of the components = 40 $-$ 20 + 27 = 47.