Find 2u 3v u v and 3u 4v for the given vectors u and v u 2

Find 2u, 3v, u + v, and 3u 4v for the given vectors u and v. u = 2, 8 , v = 2, 8

=_____

u = -2i + 8j

v = 2i - 8j

=> 2u = -4i + 16j or 2u = -4,16

=> -3v = -6i + 24j or -3v = -6,24

u+v = 0i+0j or u+v = 0,0

3u - 4v = 3(-2i + 8j) - 4(2i - 8j) = -14i + 56j or 3u - 4v = -14,56