Linear Polynomial Transformation

Shoelace Thm.
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Homework Statement


Let T:P_m(\mathbb{F}) \mapsto P_{m+2}(\mathbb{F}) such that Tp(z)=z^2 p(z). Would a suitable basis for range T be (z^2, \dots, z^{m+2})?
 
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Shoelace Thm. said:

Homework Statement


Let T:P_m(\mathbb{F}) \mapsto P_{m+2}(\mathbb{F}) such that Tp(z)=z^2 p(z). Would a suitable basis for range T be (z^2, \dots, z^{m+2})?

I don't see any problem with that. It spans T(P_m), yes?
 
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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