Revision history [back]
 | 1 | initial version |
Not satisfactory, but you can do:
sage: eq.subs({B: sqrt(17)}).subs({sqrt(17):B})
691254*B*x^15 + 397953*x^16 + 244005777*x^14| | 2 | No.2 Revision |
Not satisfactory, but you can do:
sage: eq.subs({B: sqrt(17)}).subs({sqrt(17):B})
691254*B*x^15 + 397953*x^16 + 244005777*x^14That said, since your expressions are polynomials (they do not involve things like log, sin,...), you can work in a well defined polynomial ring:
sage: R.<B,x,y> = QQ[]
sage: R
Multivariate Polynomial Ring in B, x, y over Rational Field
sage: eq.mod(B^2-17)
691254*B*x^15 + 397953*x^16 + 244005777*x^14