trig
posted by ky .
U=5i+11j and V=2i3j, find 2U7U

not sure you mean that

thats the problem i have..? the answers may be: 24i+43, 4i+j, 4i+43j, or 24i+j

2U7U
must be a TYPO
maybe 2 U  7V ?
or 2V  7 U ??? 
its 2U7V

2 U = 10 i + 22 j
7 V = 14 i  21 j
 subtract for 2 U  7 V
= 4 i + 1 j
but I have no idea if that is what you want. Please repair typo.
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