Answer :
Hello,
i and j are unit's vectors.
u=-5i-9j
v=6i+8j
-8u-2v=40i+72j-12i-16j=28i+56j
-8u-2v=<28,56>
i and j are unit's vectors.
u=-5i-9j
v=6i+8j
-8u-2v=40i+72j-12i-16j=28i+56j
-8u-2v=<28,56>