Sketching a parallelogram question

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Homework Statement


Sketch the parallelogram spanned by <2,1,0> and <-3,1,0> in the xy-plane, and compute its area.


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The Attempt at a Solution


I have already computed the area, so I don't need help with that part. I do need help sketching the parallelogram though. I can't figure out how to sketch vectors in the 3D environment like it asks for. Can anyone provide a quick walk-thru as to how it's done? Thanks in advance!
 
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It appears to ask for a sketch in the xy-plane, i.e. not in 3 dimensions
 
How do I sketch three points <x,y,z> in an xy plane?
 
What plane does the first point lie in? What plane does the second point lie in?

Thus, what plane must the line connecting these two point lie in?
 
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
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