Vector Scalar or Not Applicable?

[Stanc]

Homework Statement

a dot (b-c)*
(a dot b) x c
(a-b) x c

Which results would yield a scalar, vector, or none?

The Attempt at a Solution

Please give me some guidance, I know that a dot product produces a scalar and a cross product yields a vector but what about the addition and subtractions?

 

[tms]

Addition and subtraction of anything always results in the same thing.