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2012-07-11 01:45:43 +0200	marked best answer	How to construct a polynomial from string? `sage: R.<x> = QQ[] sage: f = R('x^3 - x^2 + x -1') sage: f.quo_rem(x-2) (x^2 + x + 3, 5)`
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2012-07-10 02:47:25 +0200	asked a question	How to construct a polynomial from string? Hi, I can run the following (putting in a .sage file) successfully. R.<x> = QQ[] f = x^3 - x^2 + x -1 p = x - 2 print f.quo_rem(p) But how about I have a string 'x^3 - x^2 + x -1', how can I construct f. f = SR('x^3 - x^2 + x -1') is not working as there is no member function quo_rem for Expression. Thanks.