pre calculus
posted by Anonymous .
find (a)2v+u, (b)u3v), and (c)5uv.
1.u=ij, v=6i+9j
2.u=2i+3j, v=i2j

pre calculus 
bobpursley
These are just multiply, group, and combine. For instance,
2a: 2v+u=2(i2j)+(2i+3j)=2i+2i4j+3j=4ij
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