Question

What is `|| <-1, 4, 2 > - < -2 , -7, 3 > ||`?

Answer 1

`sqrt123` units.

Explanation:

The problem is asking for the magnitude of the subtraction of 2 vectors.

`(-1,4,2)-(-2,-7,3)=(1,11,-1)`

Magnitude of the resulting vector is `sqrt(1^2+11^2+1^2)=sqrt123`