The r2e or poly2symb command converts lists into symbolic polynomials.
.
| r2e([1,0,-1],x) | 
or:
| r2e([1,0,-1]) | 
or:
| poly2symb([1,0,-1],x) | 
| 
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| poly2symb(%%%{1,[2]%%%}+%%%{-1,[0]%%%},[x]) | 
or:
| r2e(%%%{1,[2]%%%}+%%%{-1,[0]%%%},[x]) | 
| 
 | 
| r2e(%%%{1,[2,0]%%%}+%%%{-1,[1,1]%%%}+%%%{2,[0,1]%%%},[x,y]) | 
or:
| poly2symb(%%%{1,[2,0]%%%}+%%%{-1,[1,1]%%%}+%%%{2,[0,1]%%%},[x,y]) | 
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