Precalculus, Chapter 6, 6.4, Section 6.4, Problem 20

The dot product u*(2v) is a scalar, and its product with a vector w is a vector.
u*(2v)= lt3,3gt*(2*lt-4,2gt) = lt3,3gt*lt-8,4gt = 3*(-8)+3*4=-12.
(-12)*lt3,-1gt = lt-36,12gt. This is the answer.